KR101176426B1 - Anti-mark adhesive for optical filter - Google Patents
Anti-mark adhesive for optical filter Download PDFInfo
- Publication number
- KR101176426B1 KR101176426B1 KR1020100113951A KR20100113951A KR101176426B1 KR 101176426 B1 KR101176426 B1 KR 101176426B1 KR 1020100113951 A KR1020100113951 A KR 1020100113951A KR 20100113951 A KR20100113951 A KR 20100113951A KR 101176426 B1 KR101176426 B1 KR 101176426B1
- Authority
- KR
- South Korea
- Prior art keywords
- meth
- acrylate
- adhesive
- pressure
- acrylic
- Prior art date
Links
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 39
- 239000000853 adhesive Substances 0.000 title claims abstract description 37
- 230000003287 optical effect Effects 0.000 title claims abstract description 34
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims abstract description 53
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 42
- 125000000524 functional group Chemical group 0.000 claims abstract description 38
- 239000000178 monomer Substances 0.000 claims abstract description 38
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 28
- 229920006243 acrylic copolymer Polymers 0.000 claims abstract description 21
- 239000012948 isocyanate Substances 0.000 claims abstract description 10
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 43
- 239000002313 adhesive film Substances 0.000 claims description 18
- -1 2-ethylhexyl Chemical group 0.000 claims description 16
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 229910000077 silane Inorganic materials 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical group CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 7
- 229920000728 polyester Polymers 0.000 claims description 6
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 3
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 3
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims description 3
- 125000003368 amide group Chemical group 0.000 claims description 3
- 125000003277 amino group Chemical group 0.000 claims description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 3
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 claims description 3
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 3
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 3
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 claims description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical compound COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-UHFFFAOYSA-N 0.000 claims description 2
- 239000004816 latex Substances 0.000 claims 1
- 229920000126 latex Polymers 0.000 claims 1
- 239000004593 Epoxy Substances 0.000 abstract description 9
- 230000008859 change Effects 0.000 abstract description 7
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 24
- 238000003825 pressing Methods 0.000 description 22
- 239000010408 film Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 13
- 239000011521 glass Substances 0.000 description 13
- 239000012788 optical film Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 5
- 229920006267 polyester film Polymers 0.000 description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 description 5
- 239000005020 polyethylene terephthalate Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 3
- 239000003522 acrylic cement Substances 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 239000011368 organic material Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000009257 reactivity Effects 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
- UWFRVQVNYNPBEF-UHFFFAOYSA-N 1-(2,4-dimethylphenyl)propan-1-one Chemical compound CCC(=O)C1=CC=C(C)C=C1C UWFRVQVNYNPBEF-UHFFFAOYSA-N 0.000 description 1
- IVIDDMGBRCPGLJ-UHFFFAOYSA-N 2,3-bis(oxiran-2-ylmethoxy)propan-1-ol Chemical compound C1OC1COC(CO)COCC1CO1 IVIDDMGBRCPGLJ-UHFFFAOYSA-N 0.000 description 1
- KQSMCAVKSJWMSI-UHFFFAOYSA-N 2,4-dimethyl-1-n,1-n,3-n,3-n-tetrakis(oxiran-2-ylmethyl)benzene-1,3-diamine Chemical compound CC1=C(N(CC2OC2)CC2OC2)C(C)=CC=C1N(CC1OC1)CC1CO1 KQSMCAVKSJWMSI-UHFFFAOYSA-N 0.000 description 1
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- KUBDPQJOLOUJRM-UHFFFAOYSA-N 2-(chloromethyl)oxirane;4-[2-(4-hydroxyphenyl)propan-2-yl]phenol Chemical compound ClCC1CO1.C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 KUBDPQJOLOUJRM-UHFFFAOYSA-N 0.000 description 1
- SYEWHONLFGZGLK-UHFFFAOYSA-N 2-[1,3-bis(oxiran-2-ylmethoxy)propan-2-yloxymethyl]oxirane Chemical compound C1OC1COCC(OCC1OC1)COCC1CO1 SYEWHONLFGZGLK-UHFFFAOYSA-N 0.000 description 1
- AOBIOSPNXBMOAT-UHFFFAOYSA-N 2-[2-(oxiran-2-ylmethoxy)ethoxymethyl]oxirane Chemical compound C1OC1COCCOCC1CO1 AOBIOSPNXBMOAT-UHFFFAOYSA-N 0.000 description 1
- WTYYGFLRBWMFRY-UHFFFAOYSA-N 2-[6-(oxiran-2-ylmethoxy)hexoxymethyl]oxirane Chemical compound C1OC1COCCCCCCOCC1CO1 WTYYGFLRBWMFRY-UHFFFAOYSA-N 0.000 description 1
- QOXOZONBQWIKDA-UHFFFAOYSA-N 3-hydroxypropyl Chemical group [CH2]CCO QOXOZONBQWIKDA-UHFFFAOYSA-N 0.000 description 1
- MECNWXGGNCJFQJ-UHFFFAOYSA-N 3-piperidin-1-ylpropane-1,2-diol Chemical compound OCC(O)CN1CCCCC1 MECNWXGGNCJFQJ-UHFFFAOYSA-N 0.000 description 1
- 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
- SXIFAEWFOJETOA-UHFFFAOYSA-N 4-hydroxy-butyl Chemical group [CH2]CCCO SXIFAEWFOJETOA-UHFFFAOYSA-N 0.000 description 1
- NDWUBGAGUCISDV-UHFFFAOYSA-N 4-hydroxybutyl prop-2-enoate Chemical compound OCCCCOC(=O)C=C NDWUBGAGUCISDV-UHFFFAOYSA-N 0.000 description 1
- OZAIFHULBGXAKX-VAWYXSNFSA-N AIBN Substances N#CC(C)(C)\N=N\C(C)(C)C#N OZAIFHULBGXAKX-VAWYXSNFSA-N 0.000 description 1
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- 244000043261 Hevea brasiliensis Species 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
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- 125000005370 alkoxysilyl group Chemical group 0.000 description 1
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- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- HNEGQIOMVPPMNR-IHWYPQMZSA-N citraconic acid Chemical compound OC(=O)C(/C)=C\C(O)=O HNEGQIOMVPPMNR-IHWYPQMZSA-N 0.000 description 1
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- 150000001875 compounds Chemical class 0.000 description 1
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- 150000002527 isonitriles Chemical class 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- JAYXSROKFZAHRQ-UHFFFAOYSA-N n,n-bis(oxiran-2-ylmethyl)aniline Chemical compound C1OC1CN(C=1C=CC=CC=1)CC1CO1 JAYXSROKFZAHRQ-UHFFFAOYSA-N 0.000 description 1
- KBJFYLLAMSZSOG-UHFFFAOYSA-N n-(3-trimethoxysilylpropyl)aniline Chemical compound CO[Si](OC)(OC)CCCNC1=CC=CC=C1 KBJFYLLAMSZSOG-UHFFFAOYSA-N 0.000 description 1
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- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
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- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- 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
-
- 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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
-
- 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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
-
- 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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
-
- 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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/204—Filters in which spectral selection is performed by means of a conductive grid or array, e.g. frequency selective surfaces
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
-
- 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
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
Abstract
본 발명은 광학필터용 눌림방지 점착제에 관한 것이다.
본 발명의 광학필터용 눌림방지 점착제는 가교가능한 관능기를 포함하지 않는 아크릴 단량체 80 내지 98중량% 및 가교가능한 관능기를 포함한 아크릴 단량체 20 내지 2중량%가 공중합된 아크릴계 공중합체 100중량부에 대하여 에폭시계 또는 다관능성 이소시아네이트계 가교제 2 내지 5중량부가 함유되어 점착제의 박리력 물성과 신뢰성에 변화가 없으면서 점착제의 특성을 제어하여 눌림에 대한 기계적 강도가 증가된 광학필터용 눌림방지 점착제로 유용하다.The present invention relates to an anti-press adhesive for an optical filter.
The anti-press adhesive for an optical filter of the present invention is epoxy based on 100 parts by weight of an acrylic copolymer in which 80 to 98% by weight of an acrylic monomer containing no crosslinkable functional group and 20 to 2% by weight of an acrylic monomer containing a crosslinkable functional group are copolymerized. Or it contains 2 to 5 parts by weight of a polyfunctional isocyanate-based crosslinking agent is useful as an anti-press adhesive for an optical filter by increasing the mechanical strength against pressure by controlling the properties of the pressure-sensitive adhesive without any change in the peel force properties and reliability of the pressure-sensitive adhesive.
Description
본 발명은 광학필터용 눌림방지 점착제에 관한 것으로서, 보다 상세하게는 가교가능한 관능기를 포함하지 않는 아크릴 단량체 및 가교가능한 관능기를 포함한 아크릴 단량체가 공중합된 아크릴계 공중합체에 에폭시계 또는 다관능성 이소시아네이트계 가교제가 함유되어 점착제의 박리력 물성과 신뢰성에 변화가 없으면서 점착제의 특성을 제어하여 눌림에 대한 기계적 강도가 증가된 광학필터용 눌림방지 점착제에 관한 것이다.The present invention relates to an anti-press adhesive for an optical filter, and more particularly, an epoxy-based or polyfunctional isocyanate-based crosslinking agent is added to an acrylic copolymer in which an acrylic monomer containing no crosslinkable functional group and an acrylic monomer containing a crosslinkable functional group are copolymerized. The present invention relates to an anti-press adhesive for an optical filter, in which the mechanical strength against pressure is increased by controlling the characteristics of the adhesive without changing the peeling force properties and reliability of the adhesive.
일반적으로 디스플레이용 필터는 전자기파 차폐, 근적외선 차단, 색재현율 상승 등 여러 가지 기능성을 부여하기 위해 사용되는 플라즈마 디스플레이(PDP)에 사용되고 있다. 그런데 최근에는 디자인 기능을 강화하고 디스플레이의 내구성을 높이기 위해 액정 디스플레이(LCD)에서도 많이 사용되고 있다. 뿐만 아니라 3D 디스플레이에서는 입체성을 부여하기 위해서 여러 기능의 광학필름을 이용한 필터를 이용하고 있다. 이에 따라 텔레비전 등의 대형 디스플레이에서는 필수적으로 필터를 사용하고 있으며, 그 구성 중의 하나로 점착제도 필수적이고 점착제의 특성에도 많은 영향을 받는다. In general, display filters are used in plasma displays (PDPs), which are used to impart various functionalities such as electromagnetic shielding, near-infrared shielding, and increased color reproducibility. In recent years, however, liquid crystal displays (LCDs) have been widely used to enhance design functions and increase durability of displays. In addition, 3D display uses a filter using an optical film of various functions in order to give stereoscopic properties. Accordingly, a large display such as a television is essentially used a filter, one of the configuration is also necessary for the pressure-sensitive adhesive is affected by the characteristics of the pressure-sensitive adhesive.
디스플레이 필터는 그 기능에 따라서 사용되는 구조가 다르겠지만, 일반적으로 글래스 기재에 점착제가 부착된 광학필름이 붙여지게 된다. 또한 1장의 필름으로 구성되는 것은 아니고 다층의 광학필름이 합지되어지고, 필요에 따라서는 광학필름의 반대면에 플라즈마처리, 스퍼터링(sputtering)처리, 화학기상처리법(CVD, chemical vapor deposition) 등의 공정을 거치기도 한다. 그리고 일반적인 필름의 상태는 롤투롤(roll to roll) 공정으로 진행이 되나, 기재가 글래스가 되면 롤투시트(roll to sheet) 또는 시트투시트(sheet to sheet)의 공정으로 진행되는데 이때 상부의 글래스 무게와 하부의 반송 롤에 의해서 점착제에 눌림이 발생되기도 한다. 점착제에 눌림이 발생되면 광학필름을 리워크(re-work)하여 글래스는 다시 사용이 가능하지만 광학필름은 사용할 수가 없게 되고 고가 광학필름의 손실로 수익성이 크게 감소된다. The display filter may have a different structure depending on its function, but in general, an optical film having a pressure-sensitive adhesive is attached to a glass substrate. In addition, it is not composed of one film, but a multilayer optical film is laminated, and if necessary, processes such as plasma treatment, sputtering treatment and chemical vapor deposition (CVD) on the opposite surface of the optical film. Also go through. And the general state of the film is a roll to roll (roll to roll) process, but when the substrate is a glass to a roll to sheet (roll to sheet) or sheet to sheet (sheet to sheet) process, the glass weight of the upper Pressing may be caused to the pressure-sensitive adhesive by the transport rolls at the bottom and the bottom. If the adhesive is pressed, the optical film can be re-worked and the glass can be used again, but the optical film cannot be used and the profitability is greatly reduced due to the loss of expensive optical film.
이는 디스플레이의 크기가 대형화 되고, 사용되는 필터의 크기도 커지면서 시트 반송공정의 시간이 길어지면서 롤에 의한 점착제의 눌림은 더 커지고 빈번하게 발생되고 있다. 특히 공정의 유동에 따라 발생의 정도가 빈번하기 때문에 기본적인 점착제의 물성이 변하지 않는 범위에서 특성을 조정할 필요가 있다. This is because the size of the display is enlarged, the size of the filter used is also increased, and the time of the sheet conveying process is lengthened, so that the pressure of the pressure-sensitive adhesive by the roll is increased and is frequently generated. In particular, since the degree of occurrence is frequent according to the flow of the process, it is necessary to adjust the properties within the range that the physical properties of the basic pressure-sensitive adhesive does not change.
또한 상기 점착제에서 조성물은 천연고무계, 합성고무계, 아크릴계 또는 실리콘계 수지로 구성된 군으로부터 선택된 하나 또는 둘 이상의 배합일 수 있으며 바람직하게는 디스플레이용 필터에 사용되므로 광학특성이 우수한 아크릴계 수지를 사용하는 것이다.In the pressure-sensitive adhesive, the composition may be one or two or more combinations selected from the group consisting of natural rubber, synthetic rubber, acrylic or silicone resins, and is preferably used in a display filter, so that an acrylic resin having excellent optical properties is used.
PDP의 필터용 점착제에 관한 종래기술로서, 대한민국 특허공개 제2009-0011267호에서는 가교제 함량의 조절로 눌림방지 효과를 개시하고 있으며, 이때 가교제가 적으면 눌림이 회복되는 시간이 길어지고, 가교제가 많으면 영구 눌림이 발생되기 때문에 눌림의 회복성을 향상시키기 위해서 가교제 함량을 최적화해야 한다고 보고하고 있다. 또한 유리전이온도(Tg)의 적당한 기준을 산정하여 회복이 좋은 범위가 있다고 하고 있다. As a prior art of the adhesive for PDP filter, Korean Patent Publication No. 2009-0011267 discloses the anti-pressing effect by controlling the content of the crosslinking agent, wherein the less crosslinking agent, the longer the time for restoring the pressing, and the more crosslinking agent Since permanent crushing occurs, it is reported that the crosslinking agent content should be optimized to improve the recoverability of crushing. In addition, it is said that there is a good range of recovery by calculating an appropriate standard of glass transition temperature (Tg).
그러나 가교제의 종류나 개선방안이 구체적이지 않고, 직접적인 점착제의 특성이 아닌 이차적인 방안으로만 되어있어 개념적인 특성이 강하며, 또한 눌림은 회복력뿐만 아니라 초기에 눌림의 정도도 중요한 특성이나 상기 발명에서는 생략되어있다. However, the type or improvement of the crosslinking agent is not specific, and it is not a characteristic of the direct pressure-sensitive adhesive but only a secondary method, and the conceptual characteristics are strong. Omitted.
대한민국 특허공개 제2005-0103387호에서는 수평균 분자량이 2,000,000 내지 2,500,000이고, 유리전이온도(Tg)가 -40℃ 이하인 아크릴계 점착제에서 롤 권취나 시트 고적층시 발생되는 눌림을 개선한 점착제가 보고된 바 있다.Korean Patent Application Publication No. 2005-0103387 reported an adhesive which improved the pressing caused during roll winding or sheet lamination in an acrylic adhesive having a number average molecular weight of 2,000,000 to 2,500,000 and a glass transition temperature (Tg) of -40 ° C or lower. have.
그러나 수평균 분자량이 클수록 눌림에 대한 특성은 개선될 수 있으나 상기에서 언급하고 있는 아크릴계 고분자와 가교제의 반응후 실제 제품에서 구동되는 점착제 특성에 대한 내용은 언급되어 있지 않다. However, the larger the number average molecular weight may improve the characteristics of the pressing, but the content of the pressure-sensitive adhesive that is driven in the actual product after the reaction of the acrylic polymer and the cross-linking agent mentioned above is not mentioned.
이에 본 발명자들은 본 발명의 광학필터용 눌림방지 점착제에서 점착제의 점탄성 및 조성물의 함량을 제어함으로써 기본 물성이나 신뢰성에는 변화가 없으면서 눌림성이 개선되는 점착제를 제조할 수 있음을 확인함으로써, 본 발명을 완성하기에 이르렀다.The present inventors by controlling the content of the viscoelasticity and the composition of the pressure-sensitive adhesive in the pressure-sensitive adhesive for optical filters of the present invention by confirming that the pressure-sensitive adhesive can be produced with no change in the basic physical properties or reliability, thereby making the present invention It was completed.
본 발명의 목적은 점착제의 박리력 물성과 신뢰성에는 변화가 없으면서도 점착제의 특성을 제어하여 눌림에 대한 기계적 강도가 향상된 점착제를 제공하는 것이다. An object of the present invention is to provide a pressure-sensitive adhesive with improved mechanical strength against pressing by controlling the properties of the pressure-sensitive adhesive without any change in the peel force properties and reliability of the pressure-sensitive adhesive.
상기 목적을 달성하기 위하여 본 발명은 가교가능한 관능기를 포함하지 않는 아크릴 단량체 80 내지 98중량% 및 가교가능한 관능기를 포함한 아크릴 단량체 20 내지 2중량%가 공중합된 아크릴계 공중합체 100중량부에 대하여, 에폭시계 또는 다관능성 이소시아네이트계 가교제 2 내지 5중량부가 함유된 광학필터용 눌림방지 점착제를 제공한다.In order to achieve the above object, the present invention relates to epoxy based on 100 parts by weight of an acrylic copolymer in which 80 to 98% by weight of an acrylic monomer containing no crosslinkable functional group and 20 to 2% by weight of an acrylic monomer containing a crosslinkable functional group are copolymerized. Or an anti-press adhesive for optical filters containing 2 to 5 parts by weight of a polyfunctional isocyanate crosslinking agent is provided.
이때 상기 아크릴 공중합체 100중량부에 대하여, 실란제 0.05 내지 2중량부가 더 함유될 수 있다.At this time, with respect to 100 parts by weight of the acrylic copolymer, 0.05 to 2 parts by weight of the silane agent may be further contained.
또한, 상기 실란제가 비닐트리에톡시 실란, 비닐트리스(2-메톡시에톡시) 실란, 3-메타크릴록시프로필 트리메톡시 실란, 3-아미노프로필 트리에톡시 실란 및 N-페닐-3-아미노프로필 트리메톡시 실란으로 이루어진 군에서 선택되는 적어도 1종 이상을 사용한다.In addition, the silane agent is vinyl triethoxy silane, vinyl tris (2-methoxyethoxy) silane, 3-methacryloxypropyl trimethoxy silane, 3-aminopropyl triethoxy silane and N-phenyl-3-amino At least one or more selected from the group consisting of propyl trimethoxy silane is used.
상기 가교가능한 관능기를 포함하지 않는 아크릴 단량체가 메틸 (메타)아크릴레이트, 에틸 (메타)아크릴레이트, 프로필 (메타)아크릴레이트, 부틸 (메타)아크릴레이트, 펜틸 (메타)아크릴레이트, 헥실 (메타)아크릴레이트, 시클로헥실 (메타)아크릴레이트, 2-에틸헥실 1-(메타)아크릴레이트, 이소옥틸 (메타)아크릴레이트, 데실 (메타)아크릴레이트, 도데실 (메타)아크릴레이트, 미리스틸 (메타)아크릴레이트, 팔미틸 (메타)아크릴레이트 및 스테아릴 (메타)아크릴레이트로 이루어진 군에서 선택되는 단독 또는 2종 이상의 혼합형태를 사용하는 것이다.Acrylic monomers that do not include the crosslinkable functional groups include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, pentyl (meth) acrylate, hexyl (meth) Acrylate, cyclohexyl (meth) acrylate, 2-ethylhexyl 1- (meth) acrylate, isooctyl (meth) acrylate, decyl (meth) acrylate, dodecyl (meth) acrylate, myristyl (meth ) Acrylate, palmityl (meth) acrylate and stearyl (meth) acrylate are used alone or in combination of two or more thereof.
또한, 상기 가교가능한 관능기를 포함한 아크릴 단량체가 수산기, 카르복실기, 아미노기 및 아미드기로 이루어진 군에서 어느 하나의 관능기를 가지는 아크릴 단량체이며, 상기 아크릴 단량체가 단독 또는 혼합형태인 것을 사용한다.In addition, the acrylic monomer including the crosslinkable functional group is an acrylic monomer having any one functional group in the group consisting of a hydroxyl group, a carboxyl group, an amino group and an amide group, and the acrylic monomer is used alone or in a mixed form.
나아가, 상기 아크릴계 점착제가 30℃에서 1 이하의 낮은 주파수에서 하기 수학식 1에 의해 산출된 탄젠트 탄성율이 0.15 내지 0.4인 것을 충족하고,Furthermore, the acrylic adhesive satisfies that the tangent modulus calculated by
(상기에서, d는 탄젠트 탄성율이고, G″는 손실탄성율이고, G′는 저장탄성율이다.)(In the above, d is tangent modulus, G ″ is loss modulus, and G 'is storage modulus.)
하기 수학식 2에 의해 산출된 겔분율이 60% 이상을 충족함으로써, 점착제의 박리력 물성과 신뢰성에 변화가 없으면서 점착제의 특성을 제어하여 눌림에 대한 기계적 강도가 향상된 점착제를 제공할 수 있다.By satisfying the gel fraction calculated by
(상기에서 M은 점착제 전체 질량이고, m은 점착제 중, 겔화된 부분의 질량이다.)(M is the mass of the adhesive in the above, and m is the mass of the gelled portion in the adhesive.)
나아가 본 발명은 상기 광학필터용 눌림방지 점착제를 폴리에스테르계 중박리 시트상에 도포하고, 폴리에스테르계 경박리 시트를 순차 합지한 광학필터용 점착필름을 제공한다.Furthermore, the present invention provides the pressure-sensitive adhesive film for an optical filter by applying the pressure-sensitive adhesive for optical filters on a polyester-based heavy peeling sheet, and sequentially laminating a polyester-based light peeling sheet.
본 발명은 가교가능한 관능기를 포함하지 않는 아크릴 단량체 및 가교가능한 관능기를 포함한 아크릴 단량체가 공중합된 아크릴계 공중합체에 에폭시계 또는 다관능성 이소시아네이트계 가교제가 함유된 광학필터용 눌림방지 점착제로서, 상기 가교가능한 관능기를 포함하지 않는 아크릴 단량체 및 가교가능한 관능기를 포함한 아크릴 단량체의 함량을 조절하고, 상기 에폭시계 또는 다관능성 이소시아네이트계 가교제의 함량을 최적화함으로써 점착제의 박리력 물성과 신뢰성에 변화가 없으면서 점착제의 특성을 제어하여 눌림에 대한 기계적 강도가 증가된 광학필터용 눌림방지 점착제를 제공할 수 있다.The present invention provides an anti-press adhesive for an optical filter containing an epoxy monomer or a polyfunctional isocyanate-based crosslinking agent in an acrylic copolymer in which an acrylic monomer containing no crosslinkable functional group and an acrylic monomer including a crosslinkable functional group are copolymerized. By controlling the content of the acrylic monomer and the acrylic monomer containing a cross-linkable functional group and the cross-linking functional group and optimizing the content of the epoxy-based or polyfunctional isocyanate-based crosslinking agent to control the properties of the pressure-sensitive adhesive without changing the peel force properties and reliability of the pressure-sensitive adhesive Thus, it is possible to provide an anti-press adhesive for an optical filter with increased mechanical strength against pressing.
또한, 본 발명은 점착제의 점탄성을 제어함으로써 눌림에 관한 물성을 개선하고 필터 제조공정의 안정성을 제공할 수 있다.In addition, the present invention can improve the physical properties related to the pressing by controlling the viscoelasticity of the pressure-sensitive adhesive and can provide stability of the filter manufacturing process.
또한, 본 발명은 점탄성을 제어하되 기본적인 점착제의 박리력, 유지력, 전단력, 광특성은 동등하게 유지시키면서 눌림에 관한 물성을 개선하였으며, 초기부터 눌림이 적게 형성되고, 눌림이 형성되더라도 쉽게 복원되는 특징을 가지는 광학필터용 눌림방지 점착제를 제공할 수 있다.In addition, the present invention is to control the viscoelasticity, while maintaining the peeling force, holding force, shear force, optical properties of the pressure-sensitive adhesive properties while improving the properties related to the pressing, less pressing is formed from the beginning, it is easy to restore even if the pressing is formed An anti-press adhesive for an optical filter may be provided.
도 1은 글래스(1)와 점착제가 적층된 폴리에스테르 필름(23)이 적층된 구조이며, 도 2는 글래스(1), 점착제(2) 및 폴리에스테르 필름(3)이 순차 적층 후 폴리에스테르 필름(3) 위에 롤(4)이 적층된 구조이다.1 is a structure in which a
이하에서 본 발명을 보다 상세히 설명하고자 한다.Hereinafter, the present invention will be described in more detail.
본 발명은 가교가능한 관능기를 포함하지 않는 아크릴 단량체 80 내지 98중량% 및 가교가능한 관능기를 포함한 아크릴 단량체 20 내지 2중량%가 공중합된 아크릴계 공중합체 100중량부에 대하여, 에폭시계 또는 다관능성 이소시아네이트계 가교제 2 내지 5중량부가 함유된 광학필터용 눌림방지 점착제를 제공한다.The present invention relates to an epoxy-based or polyfunctional isocyanate-based crosslinking agent based on 100 parts by weight of an acrylic copolymer in which 80 to 98% by weight of an acrylic monomer containing no crosslinkable functional group and 20 to 2% by weight of an acrylic monomer containing a crosslinkable functional group are copolymerized. Provided is an anti-press adhesive for an optical filter containing 2 to 5 parts by weight.
상기 가교가능한 관능기를 포함하지 않는 아크릴 단량체가 80 중량부 미만이 될 경우는 상대적으로 관능기의 수가 많아지기 때문에 점착제의 저장안정성에 문제가 될 수 있고, 98 중량부를 초과하면 관능기의 반응성이 현저하게 떨어지기 때문에 반응이 잘 이뤄지지 않을 수가 있고, 촉매와 같은 다른 첨가제의 함유가 필요하게 되기 때문에 적절한 공중합체라고 볼 수 없다.When the acrylic monomer not containing the crosslinkable functional group is less than 80 parts by weight, the number of functional groups is relatively increased, which may cause a problem in storage stability of the pressure-sensitive adhesive. When it exceeds 98 parts by weight, the reactivity of the functional group is remarkably decreased. It may not be considered a suitable copolymer because the reaction may not be performed well and the inclusion of other additives such as a catalyst is required.
상기 가교가능한 관능기를 포함하지 않는 아크릴 단량체는 (메타)아크릴산 에스테르 단량체로, 특별히 제한되지 않으며, 에스테르 부분의 알킬기의 탄소수가 1 내지 20인 (메타)아크릴산 에스테르가 이용될 수 있다. 상기 에스테르 부분의 알킬기의 탄소수가 1 내지 20인(메타) 아크릴산 에스테르의 예로는 메틸 (메타)아크릴레이트, 에틸 (메타)아크릴레이트, 프로필 (메타)아크릴레이트, 부틸 (메타)아크릴레이트, 펜틸 (메타)아크릴레이트, 헥실 (메타)아크릴레이트, 시클로헥실 (메타)아크릴레이트, 2-에틸헥실 1-(메타)아크릴레이트, 이소옥틸 (메타)아크릴레이트, 데실 (메타)아크릴레이트, 도데실 (메타)아크릴레이트, 미리스틸 (메타)아크릴레이트, 팔미틸 (메타)아크릴레이트 및 스테아릴 (메타)아크릴레이트로 이루어진 군에서 선택되는 단독 또는 2종 이상의 혼합형태인 것을 특징으로 한다.The acrylic monomer that does not include the crosslinkable functional group is a (meth) acrylic acid ester monomer, and is not particularly limited, and a (meth) acrylic acid ester having 1 to 20 carbon atoms in the alkyl group of the ester portion may be used. Examples of the (meth) acrylic acid ester having 1 to 20 carbon atoms of the alkyl group of the ester moiety include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, pentyl ( Meta) acrylate, hexyl (meth) acrylate, cyclohexyl (meth) acrylate, 2-ethylhexyl 1- (meth) acrylate, isooctyl (meth) acrylate, decyl (meth) acrylate, dodecyl ( Meta) acrylate, myristyl (meth) acrylate, palmityl (meth) acrylate and stearyl (meth) acrylate, characterized in that it is a single or mixed form of two or more selected from the group consisting of.
상기 가교가능한 관능기를 포함하는 아크릴 단량체는 관능기로 수산기, 카르복실기, 아미노기, 아미드기 중 선택되는 어느 하나의 관능기를 포함하는 아크릴 단량체로서 구체적인 예로는 (메타)아크릴산 2-히드록시에틸, (메타)아크릴산 2-히드록시프로필, (메타)아크릴산 3-히드록시프로필, (메타)아크릴산 2-히드록시부틸, (메타)아크릴산 3-히드록시부틸 및 (메타)아크릴산 4-히드록시부틸 등의 (메타)아크릴산 히드록시 알킬 에스테르; (메타)아크릴아미드, N-메틸(메타)아크릴아미드 및 N-메틸올(메타) 아크릴아미드 등의 아크릴 아미드류; (메타)아크릴산 모노메틸 아미노 에틸, (메타)아크릴산 모노알킬 아미노 에스테르; 아크릴산, 메타크릴산, 크로톤산, 말레인산, 이타콘산 및 시트라콘산 등의 에틸렌성 불포화 카르복시산; 등을 들 수 있다. 이들 단량체는 단독 또는 2종 이상을 혼합한 것을 특징으로 한다.The acrylic monomer including the crosslinkable functional group is an acrylic monomer including any functional group selected from hydroxyl group, carboxyl group, amino group, and amide group as a functional group, and specific examples thereof include (meth) acrylic acid 2-hydroxyethyl and (meth) acrylic acid. (Meth), such as 2-hydroxypropyl, 3-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, 3-hydroxybutyl (meth) acrylate, and 4-hydroxybutyl (meth) acrylate Acrylic acid hydroxy alkyl esters; Acryl amides such as (meth) acrylamide, N-methyl (meth) acrylamide and N-methylol (meth) acrylamide; (Meth) acrylic acid monomethyl amino ethyl, (meth) acrylic acid monoalkyl amino esters; Ethylenically unsaturated carboxylic acids such as acrylic acid, methacrylic acid, crotonic acid, maleic acid, itaconic acid and citraconic acid; And the like. These monomers are characterized by being single or in mixture of two or more kinds.
상기의 아크릴 공중합체의 내구성을 높이기 위해 가교제를 혼용하는데 공중합체 100 중량부에 에폭시계 가교제 또는 다관능성 이소시아네이트계 가교제 0.05 내지 5 중량부로 포함되는 것을 특징으로 한다. 가교제가 0.05 미만으로 함유될 경우 아크릴 공중합체에 포함된 관능기와의 반응이 잘 이뤄지지 못하고 점착제의 내부 응집력을 강하게 만들 수가 없다. 가교제가 5 중량부를 초과하게 되면 점착제의 가공 중 저장안정성이 떨어져서 일정한 물성을 발현할 수가 없고, 추가적으로 반응을 지연시켜주는 지연제를 첨가하거나, 아크릴 공중합체와 가교제의 혼합액을 반응성을 늦추기 위해 저온에서 보관해야 하는 또 다른 추가 관리가 포함되기 때문에 적당하다고 볼 수 없다. In order to increase the durability of the acrylic copolymer, a crosslinking agent may be used in a mixture of 100 parts by weight to 0.05 parts by weight of an epoxy crosslinking agent or a polyfunctional isocyanate crosslinking agent. When the crosslinking agent is contained less than 0.05, the reaction with the functional groups contained in the acrylic copolymer is not well achieved and the internal cohesion of the pressure-sensitive adhesive cannot be made strong. If the crosslinking agent exceeds 5 parts by weight, the storage stability during the processing of the pressure-sensitive adhesive may not be able to express certain physical properties, and additionally, a delaying agent may be added to delay the reaction, or a mixture of the acrylic copolymer and the crosslinking agent may be used at low temperature to slow the reactivity. It is not suitable because it involves another additional control that must be kept.
상기 에폭시계 가교제로는 비스페놀 A-에피클로로히드린 형의 에폭시계 수지, 에틸렌 글리콜 디글리시딜 에테르, 폴리에틸렌글리콜 디글리시딜 에테르, 글리세린 디글리시딜 에테르, 글리세린 트리 글리시딜 에테르, 1,6-헥산디올 디글리시딜 에테르, 트리메틸올프로판 트리 글리시딜 에테르, 디글리시딜 아닐린, N,N,N',N'-테트라 글리시딜-m-크실렌 디아민 또는 이들의 혼합물 등을 사용할 수 있다. 또한 다관능성 이소시아네이트계 가교제로는 톨리렌디이소시아네이트, 디페닐메탄디이소시아네이트, 헥사메틸렌디이소시아네이트, 톨리렌디이소시아네이트의 트리메틸올프로판 부가물 또는 이들의 혼합물 등을 사용할 수 있다.Examples of the epoxy crosslinking agent include an epoxy resin of bisphenol A-epichlorohydrin type, ethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, glycerin diglycidyl ether, glycerin triglycidyl ether, 1 , 6-hexanediol diglycidyl ether, trimethylolpropane triglycidyl ether, diglycidyl aniline, N, N, N ', N'-tetra glycidyl-m-xylene diamine or mixtures thereof Can be used. As the polyfunctional isocyanate-based crosslinking agent, tolylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, trimethylolpropane adduct of tolylene diisocyanate, a mixture thereof, and the like can be used.
상기 아크릴 공중합체가 글래스를 포함한 무기재와의 점착성을 향상시키기 위해 상기 아크릴 공중합체 100 중량부에 실란제를 0.05 내지 2 중량부 포함할 수도 있다. 이는 분자의 구조나 분자량의 크기 등 재료의 특성에 따라서 점착제 자체의 점탄성에 큰 영향을 끼치기 때문에 적당한 종류와 함량을 결정할 필요가 있다. 이때, 상기 실란제가 0.05 미만이 함유될 경우 실란제의 역할인 무기재와 아크릴 공중합체의 유기재와의 상용성을 높이기 부족하고 2 중량부를 초과하게 되면 실란제의 역할 이상의 양이 포함하게 되어 무기재와 유기재간의 점착력을 올려주기 보다는 미 반응된 실란제가 가교제의 효과를 나타냄으로써 점착제의 신뢰성에 문제를 발생시키게 된다. The acrylic copolymer may include 0.05 to 2 parts by weight of a silane agent in 100 parts by weight of the acrylic copolymer in order to improve adhesion with an inorganic material including glass. This has a great influence on the viscoelasticity of the pressure-sensitive adhesive itself depending on the properties of the material, such as the molecular structure and the size of the molecular weight, it is necessary to determine the appropriate type and content. In this case, when the silane agent contains less than 0.05, the inorganic material which is a role of the silane agent and the organic material of the acrylic copolymer are insufficient to increase compatibility, and when the content exceeds 2 parts by weight, the amount of the silane agent may be included. Rather than raising the adhesive strength between the organic material and the organic material, the unreacted silane agent exhibits the effect of the crosslinking agent, thereby causing a problem in the reliability of the adhesive.
상기 실란제는 분자 내에 알콕시 실릴기를 적어도 1개 이상 가지는 화합물로 점착제 성분과 상용성이 양호하고 광 투과성이 우수한 것이 바람직하며, 구체적인 예로 비닐트리에톡시 실란, 비닐트리스(2-메톡시에톡시) 실란, 3-메타크릴록시프로필 트리메톡시 실란, 3-아미노프로필 트리에톡시 실란 및 N-페닐-3-아미노프로필 트리메톡시 실란으로 이루어진 군에서 선택되는 적어도 1종 이상 포함한 것을 특징으로 한다.The silane agent is a compound having at least one alkoxy silyl group in a molecule, and preferably has good compatibility with the pressure-sensitive adhesive component and excellent light transmittance. Specific examples thereof include vinyltriethoxy silane and vinyltris (2-methoxyethoxy). At least one selected from the group consisting of silane, 3-methacryloxypropyl trimethoxy silane, 3-aminopropyl triethoxy silane, and N-phenyl-3-aminopropyl trimethoxy silane.
상기 아크릴계 점착제가 30℃에서 1 이하의 낮은 주파수에서 하기 수학식 1에 의해 산출된 탄젠트 탄성율이 0.15 내지 0.4인 것을 특징으로 한다.The acrylic adhesive is characterized in that the tangent modulus calculated by
수학식 1
(상기에서, d는 탄젠트 탄성율이고, G″는 손실탄성율이고, G′는 저장탄성율이다.)(In the above, d is tangent modulus, G ″ is loss modulus, and G 'is storage modulus.)
이때, 점탄성 특성에서 30℃에서 1 이하의 낮은 주파수에서의 저장탄성율이 1 × 104 내지 1 × 105Pa을 가진다. 상기 저장탄성율(G′)의 값이 1 × 104Pa 미만이 되면 점착제가 부드러워서 내부적인 응집력이 떨어지거나 내구 신뢰성에서 불합격 판정을 받을 가능성이 크고, 1 × 105Pa 초과 되면 점착제가 단단해서 점착성이 감소되어 기재에 잘 붙지 않거나 광학필름과 점착제 또는 점착제와 글래스와 합지후에 쉽게 탈락되는 문제가 발생될 수 있다.At this time, the storage modulus at a low frequency of 1 or less at 30 ° C. in the viscoelastic property has 1 × 10 4 to 1 × 10 5 Pa. The storage modulus (G ') when the value is 1 × 10 under 4 Pa falls the adhesive is soft and the internal cohesive strength or endurance reliability large likely to be rejected, 1 × 10 After 5 Pa than to the pressure sensitive adhesive is hard tack This may reduce the problem of sticking to the substrate or easily falling off after lamination with the optical film and the adhesive or the adhesive and the glass.
상기 수학식 1에 의해 계산되는 저장탄성율에 대한 손실탄성율의 비(d)를 나타내는 탄젠트 탄성율 값이 0.15 미만이면 손실탄성율 값이 너무 작게 되어서 눌림이 작게 형성되는 이점은 있으나 형성된 눌림이 강하게 발생되는 경향이 있어서 쉽게 복원되지 못하게 되며, 0.4 초과시 눌림에 의한 스트레스가 쉽게 풀어질 수 있으나 초기 눌림의 양이 상당하기 때문에 작은 힘에도 쉽게 눌려질 수 있다. If the tangent modulus value representing the ratio (d) of the loss modulus to the storage modulus calculated by
또한 상기 아크릴계 점착제가 하기 수학식 2에 의해 산출된 겔분율이 60% 이상인 것을 특징으로 한다.In addition, the acrylic pressure-sensitive adhesive is characterized in that the gel fraction calculated by
수학식 2
(상기에서 M은 점착제 전체 질량이고, m은 점착제 중, 겔화된 부분의 질량이다.)(M is the mass of the adhesive in the above, and m is the mass of the gelled portion in the adhesive.)
이때, 상기 겔분율(%)이 60% 미만이 되면 화학적인 반응에 의해 이루어진 고분자 사슬의 얽힘의 정도가 적게 된다. 점착제 내부의 응집력이 떨어져서 내구성이 문제가 될 수 있으며 점착제의 물성변화나 편차가 커지는 불균일성을 야기시킬 수 있다.At this time, when the gel fraction (%) is less than 60%, the degree of entanglement of the polymer chain made by the chemical reaction is reduced. Durability may be a problem because the cohesion inside the pressure-sensitive adhesive is degraded, and it may cause a nonuniformity in which the physical properties of the pressure-sensitive adhesive are changed or the variation is large.
나아가 상기 광학필터용 눌림방지 점착제를 폴리에스테르계 중박리 시트상에 도포하고, 폴리에스테르계 경박리 시트를 순차 합지한 광학필터용 점착필름으로 사용될 수 있다.
Furthermore, the anti-press adhesive for the optical filter may be applied onto the polyester-based heavy peeling sheet, and the polyester-based light peeling sheet may be used as the adhesive film for the optical filter sequentially laminated.
이하, 본 발명의 실시예에 의하여 상세히 설명한다.Hereinafter, the embodiment of the present invention will be described in detail.
하기 실시예는 본 발명을 예시하는 것일 뿐, 본 발명의 범위가 하기 실시예에 한정되는 것은 아니다.The following examples are merely illustrative of the present invention, but the scope of the present invention is not limited to the following examples.
<< 제조예Manufacturing example 1~2>아크릴 공중합체 제조 1 ~ 2> Acrylic Copolymer Preparation
교반기, 환류 냉각기, 온도계 및 질소 주입 장치가 구비된 500㎖의 화학 반응기에 가교가능한 관능기를 포함하지 않은 아크릴계 단량체와 가교가능한 관능기를 포함한 아크릴계 단량체를 하기 표 1에 기재된 함량으로 도입하고 용매로 에틸아세테이트 100g을 가하고 반응개시제로 아조(비스)이소니트릴(AIBN) 0.02g을 첨가한 후, 질소 기류 하에서 55℃에서 15시간 동안 중합 반응시켰다. 반응 완결 후 중합물에 에틸아세테이트 300g을 첨가하여 희석하여 고형분 20%가 함유된 아크릴 공중합체 A 및 B를 합성하였다.Into a 500 ml chemical reactor equipped with a stirrer, a reflux cooler, a thermometer, and a nitrogen injection device, an acrylic monomer containing no crosslinkable functional group and an acrylic monomer containing a crosslinkable functional group were introduced in the contents shown in Table 1 below , and ethyl acetate was used as a solvent. 100 g was added and 0.02 g of azo (bis) isonitrile (AIBN) was added as a reaction initiator, followed by polymerization for 15 hours at 55 ° C under a stream of nitrogen. After completion of the reaction, 300 g of ethyl acetate was added to the polymer and diluted to synthesize acrylic copolymers A and B containing 20% solids.
(아크릴 공중합체 A)Production Example 1
(Acrylic copolymer A)
(아크릴 공중합체 B)Preparation Example 2
(Acrylic copolymer B)
MA 20gn-BA 75g
MA 20g
MA 20gn-BA 75g
MA 20g
아크릴계 단량체Contains crosslinkable functional group
Acrylic monomer
MA : 메타아크릴레이트
4-HBA : 4-히드록시부틸아크릴레이트n-BA: n-butyl acrylate
MA: methacrylate
4-HBA: 4-hydroxybutyl acrylate
<< 제조예Manufacturing example 3>점착필름의 제조 3> Manufacture of Adhesive Film
상기 제조예 1 및 2에서 제조된 아크릴 공중합체 A (또는 B) 100중량부, 가교제로 사용된 헥사메틸렌 디이소시아네이트 (HDI adduct, 삼영잉크, BX-562) 및 실란제로 사용된 비닐트리에톡시 실란 (삼영잉크, BX-632)를 하기 표 2와 같은 조성으로 투입하고, 메틸에틸케톤(MEK)를 이용하여 적정 농도로 희석하여 균일하게 혼합하여 점착제 조성물을 제조하였다.100 parts by weight of the acrylic copolymer A (or B) prepared in Preparation Examples 1 and 2, hexamethylene diisocyanate (HDI adduct, Samyoung Ink, BX-562) used as a crosslinking agent, and vinyltriethoxy silane used as a silane agent. (Samyoung Ink, BX-632) was added to the composition shown in Table 2 below, diluted to an appropriate concentration using methyl ethyl ketone (MEK) and uniformly mixed to prepare a pressure-sensitive adhesive composition.
중박리 시트로서 사용된 2축 연신 폴리에틸렌 테레프탈레이트 필름(도레이첨단소재㈜, PC-101)의 실리콘 이형코팅면에 상기 제조된 점착제 조성물을 코팅하고 건조하여 25㎛두께의 균일한 점착필름을 제조하였다. 이후 상기 점착필름에서 점착제 코팅면에 경박리 시트로서 폴리에틸렌 테레프탈레이트 필름(도레이첨단소재㈜, RPK-201)을 합지한 후, 상온에서 7일간 보관하여 충분히 숙성하여 광학필터용 점착필름을 제조하였다.The pressure-sensitive adhesive composition prepared above was coated on a silicone release coating surface of a biaxially stretched polyethylene terephthalate film (Toray Advanced Materials, Inc., PC-101) used as a heavy peeling sheet, and dried to prepare a uniform adhesive film having a thickness of 25 μm. . Then, after laminating a polyethylene terephthalate film (Toray Advanced Materials Co., Ltd., RPK-201) as a light peeling sheet on the pressure-sensitive adhesive coating surface in the pressure-sensitive adhesive film, it was stored at room temperature for 7 days to prepare a pressure-sensitive adhesive film for optical filters.
(중량부)Acrylic copolymer
(Parts by weight)
<< 실험예Experimental Example > 물성평가> Property Evaluation
1) 탄성율 측정1) Elastic modulus measurement
상기 광학필터용 점착필름을 25㎛의 두께로 20장을 적층하여 전체 필름두께 0.5㎜로 만들고, 지름 8㎜의 원주형 시험편을 제작하여, 주파주 변화에 따른 비틀림 전단법(dynamic shear method, frequency sweep)에 의해 아래와 같은 조건으로 저장탄성률(G′) 및 손실탄성율(G″)을 측정하였다. 그 중 낮은 주파수인 0.5 rad/s에서의 값을 취하여 평가의 기준으로 하였다. The adhesive film for the optical filter is laminated 20 sheets with a thickness of 25 ㎛ to make a total film thickness of 0.5 mm, to produce a cylindrical test piece of 8 mm in diameter, the dynamic shear method (frequency) according to the frequency change The storage modulus (G ′) and loss modulus (G ″) were measured under the following conditions. Among them, a value at 0.5 rad / s, which is a low frequency, was taken as a criterion for evaluation.
주파수 : 0.1~10 rad/sFrequency: 0.1-10 rad / s
온도 : 30℃Temperature: 30 ℃
변형 : 10% (두께에 따른 상대적인 변형율)Deformation: 10% (relative strain according to thickness)
2) 겔 함량 측정2) gel content measurement
상기 실시예 1 내지 2 및 비교예 1 내지 4에서 제조된 광학필터용 점착필름 약 0.2g을 취하여 200 메쉬스테인레스 망에 보관한 후, 에틸아세테이트(EtAc) 50g을 첨가하고 3일 동안 방치하였다. 그 후 용해되지 않고 겔 상태로 남아 있는 성분을 걸러내었다. 이후 120℃ 오븐에서 1시간 동안 건조한 후, 잔류하는 질량을 측정하고 초기의 질량과 비교하여 겔분율을 측정하였다.About 0.2 g of the adhesive film for optical filters prepared in Examples 1 to 2 and Comparative Examples 1 to 4 were taken and stored in a 200 mesh stainless steel net, and 50 g of ethyl acetate (EtAc) was added thereto and left for 3 days. Thereafter, the components which were not dissolved and remained in the gel state were filtered out. After drying in an oven at 120 ° C. for 1 hour, the remaining mass was measured and the gel fraction was measured by comparing with the initial mass.
이때, m은 광학필터용 점착필름 중 겔화되어 에틸아세테이트에 용해되지 않은 점착필름의 질량에 관한 것이나, 상기 광학필터용 점착필름에서 용해되지 않은 점착필름의 질량(m)을 직접 산출하는 것은 어려우므로, 점착필름을 용해시킨 후, 이를 필터를 통해 여과시키고 필터로 사용된 메쉬스테인레스 망 및 겔화된 점착필름 전체의 질량(m′)에서 사용된 메쉬스테인레스 망 자체의 질량(F)을 차감하는 간접적인 방법으로 산출하였다.In this case, m relates to the mass of the adhesive film which is gelled in the optical filter adhesive film and is not dissolved in ethyl acetate, but it is difficult to directly calculate the mass (m) of the adhesive film that is not dissolved in the optical filter adhesive film. After dissolving the pressure-sensitive adhesive film, it is filtered through a filter and indirectly subtracted the mass (F) of the mesh stainless steel mesh itself used from the mass (m ') of the mesh stainless steel mesh and the whole gelled pressure-sensitive adhesive film. It calculated by the method.
수학식 2
(상기에서 M은 점착필름의 전체질량이고, m은 점착필름 중 겔화되어 에틸아세테이트에 용해되지 않은 점착필름의 질량으로, m = m′- F 로 산출된다. 이때 m′필터로 사용된 메쉬스테인레스 망 및 겔화된 점착필름 전체의 질량이며, F는 메쉬스테인레스 망의 질량을 나타낸다.)(In the above, M is the total mass of the adhesive film, m is the mass of the adhesive film which is gelled in the adhesive film and is not dissolved in ethyl acetate, and is calculated as m = m'- F. In this case, the mesh stainless used as the m 'filter) The mass of the entire web and gelled pressure-sensitive adhesive film, F represents the mass of the mesh stainless steel mesh.)
3) 박리력 측정3) Peel force measurement
상기 제조된 점착필름에서 경박리 시트를 제거하고 100㎛ 두께의 폴리에틸렌 테레프탈레이트 필름을 합지한 후 상온 1시간을 방치한 후, 폭 25㎜, 길이 150㎜의 박리력 측정 시편을 제작하였다. 상기 제작된 시편의 중박리 시트를 제거하여 에틸아세테이트(EA)로 세척한 글래스에 2㎏의 롤러로 부착한 후, 상온 1시간 동안 방치하였다. 측정은 180°각도 및 0.3m/분 박리속도로 인장시험기를 이용하여 측정하였다.After removing the light peeling sheet from the adhesive film prepared above and laminating a polyethylene terephthalate film having a thickness of 100 μm, and left at room temperature for 1 hour, a peeling force measurement specimen having a width of 25 mm and a length of 150 mm was prepared. After removing the heavy peeling sheet of the prepared specimen attached to the glass washed with ethyl acetate (EA) with a roller of 2kg, it was left for 1 hour at room temperature. The measurement was carried out using a tensile tester at an angle of 180 ° and a peel rate of 0.3 m / min.
4) 눌림성 평가4) Pressability evaluation
상기 제조한 점착제에서 경박리 시트를 제거하고 100㎛ 두께의 폴리에틸렌 테레프탈레이트 필름을 합지한 후 상온에서 1시간 동안 방치한 다음 50㎜ 200㎜로 눌림성 평가 시편을 제작한 후 도 1과 같은 크기의 글래스에 2㎏의 롤러로 부착하고, 상온에서 1시간 동안 방치한 후, 도 2와 같이 2kg의 무게를 가지고 지름이 12㎜인 롤을 올려서 10분간 방치하여 시편의 양쪽 끝에서 롤에 의해서 발생된 눌림의 길이를 측정하였다. After removing the light-peel sheet from the pressure-sensitive adhesive prepared and laminated the polyethylene terephthalate film of 100㎛ thickness and left for 1 hour at room temperature and then produced a pressing test specimen to 50mm 200㎜ size of the same as Figure 1 After attaching to the glass with a roller of 2kg, and left at room temperature for 1 hour, as shown in Fig. 2 , by raising the roll 12mm in diameter with a weight of 2kg and left for 10 minutes to be generated by the roll at both ends of the specimen The length of the push was measured.
또한 발생된 눌림에 대해서 눌림이 사라지는 시간을 측정하여 회복정도를 평가하였다. In addition, the degree of recovery was assessed by measuring the time for the disappearance of the pressed against the generated pressing.
5) 신뢰성 평가5) Reliability Assessment
상기 제조한 점착제에서 경박리 시트를 제거하고 100㎛ 두께의 폴리에틸렌 테레프탈레이트 필름을 합지한 후 상온에서 1시간 동안 방치한 다음 100㎜ 100㎜으로 신뢰성 평가 시편을 제작한 후 글래스에 2㎏의 롤러로 부착한다. 상온에서 1시간 동안 방치한 후 내습열 조건 60℃, 90%RH와 내열 조건 80℃에서 500 시간 동안 육안으로 기포 발생 및 양쪽 끝의 들뜸을 관찰하였다. After removing the light-peel sheet from the pressure-sensitive adhesive prepared and laminated the polyethylene terephthalate film of 100㎛ thickness and left for 1 hour at room temperature, and then produced a test piece for reliability evaluation 100mm 100mm with a roller of 2kg on glass Attach. After standing at room temperature for 1 hour, bubble generation and lifting of both ends were visually observed for 500 hours at 60 ° C, 90% RH, and 80 ° C.
○: 내습열과 내열 조건에서 기포의 발생이나 들뜸이 없음.(Circle): There is no air bubble generation | occurrence | production and floating in moisture-resistant heat and heat-resistant conditions.
×: 내습열이나 내열 조건에서 기포의 발생이나 들뜸이 발생.X: Generation | occurrence | production of a bubble and lifting | fever generate | occur | produces in heat-and-moisture-proof and heat-resistant conditions.
[%]Gel content
[%]
[gf/25㎜]Peel force
[gf / 25 mm]
[Pa]Storage modulus
[Pa]
[㎜]Pressed length
[Mm]
[분]Recovery time
[minute]
G″는 손실탄성율, G′는 저장탄성율Tangent modulus (d) = G ″ / G ′
G ″ is loss modulus, G ′ is storage modulus
상기 표 3에 나타난 바와 같이, 가교제의 함량에 따른 실시예 1 및 비교예 1의 점착필름에 있어서, 비교예 1의 점착필름의 결과로부터 가교제 함량이 낮을수록 겔함량(%)이 낮아지고, 그에 따라 눌림성 평가에 있어 눌림 길이가 커지고 회복시간이 길어진 결과를 확인하였다.As shown in Table 3, in the adhesive films of Example 1 and Comparative Example 1 according to the content of the crosslinking agent, the gel content (%) is lower as the crosslinking agent content is lower from the results of the adhesive film of Comparative Example 1, As a result, in the evaluation of the pressing, the pressing length was increased and the recovery time was confirmed.
또한 실시예 1의 점착필름 제조공정에 비닐트리에톡시 실란 0.5중량부 더 함유된 실시예 2의 경우, 우수한 박리력 및 신뢰성이 우수하고, 눌림에 대한 기계적 강도가 우수하였다.In addition, in Example 2, in which 0.5 parts by weight of vinyl triethoxy silane was further included in the adhesive film manufacturing process of Example 1, excellent peeling force and reliability were excellent, and mechanical strength against pressing was excellent.
그러나 상기 비닐트리에톡시 실란의 함량이 3중량부로 함유될 경우, 비교예 2의 점착필름은 눌림 이후 회복시간이 연장되는 결과를 확인하였다.However, when the content of the vinyl triethoxy silane contained in 3 parts by weight, the adhesive film of Comparative Example 2 was confirmed that the recovery time is extended after pressing.
반면에, 아크릴 공중합체 제조시 가교가능한 관능기를 가지는 아크릴 단량체 함량에 있어서, 비교예 3 및 4의 경우, 아크릴레이트 공중합체 내의 가교가능한 관능기의 함량이 감소할수록 겔함량이 감소하고 그에 따라 눌림성 평가에 있어서 눌림의 정도가 크고 회복의 시간이 길어짐을 확인하였다.On the other hand, in the acrylic monomer content having a crosslinkable functional group in preparing the acrylic copolymer, in Comparative Examples 3 and 4, as the content of the crosslinkable functional group in the acrylate copolymer decreases, the gel content decreases and accordingly the pressing property is evaluated. It was confirmed that the degree of depression and the time for recovery were longer in E.
상기에서 살펴본 바와 같이 본 발명은 가교가능한 관능기를 포함하지 않는 아크릴 단량체 및 가교가능한 관능기를 포함한 아크릴 단량체가 공중합된 아크릴계 공중합체에 대하여, 에폭시계 또는 다관능성 이소시아네이트계 가교제가 함유된 광학필터용 눌림방지 점착제를 제공하였다.As described above, the present invention provides an anti-press for an optical filter containing an epoxy-based or polyfunctional isocyanate-based crosslinking agent for an acrylic copolymer in which an acrylic monomer containing no crosslinkable functional group and an acrylic monomer including a crosslinkable functional group are copolymerized. An adhesive was provided.
상기 가교가능한 관능기를 포함하지 않는 아크릴 단량체와 가교가능한 관능기를 포함하는 아크릴 단량체의 비율 및 가교제의 비율을 최적화함으로써, 점착제의 박리력 물성과 신뢰성에 변화가 없으면서 점착제의 특성을 제어하여 눌림에 대한 기계적 강도가 증가된 광학필터용 눌림방지 점착제를 제공하였다.By optimizing the ratio of the acrylic monomer not containing the crosslinkable functional group and the acrylic monomer containing the crosslinkable functional group and the ratio of the crosslinking agent, the pressure-sensitive adhesive properties of the pressure-sensitive adhesive can be controlled without changing the mechanical properties of the pressure-sensitive adhesive without any change. An anti-press adhesive for optical filters having increased strength was provided.
또한 본 발명은 액정 디스플레이, 플라즈마 디스플레이, 유기 발광 다이오드(전기 발광)소자, 필드에미션 디스플레이 등을 구성하는 광학필름 또는 광학시트과 글래스 기재로 구성된 필터용 점착제로 사용할 수 있다.
In addition, the present invention can be used as an adhesive for a filter composed of an optical film or an optical sheet and a glass substrate constituting a liquid crystal display, a plasma display, an organic light emitting diode (electroluminescent) device, a field emission display and the like.
이상에서 본 발명은 기재된 실시예에 대해서만 상세히 설명되었지만 본 발명의 기술사상 범위 내에서 다양한 변형 및 수정이 가능함은 당업자에게 있어서 명백한 것이며, 이러한 변형 및 수정이 첨부된 특허청구범위에 속함은 당연한 것이다.Although the present invention has been described in detail only with respect to the embodiments described, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical spirit of the present invention, and such modifications and variations belong to the appended claims.
1: 글래스 (1.1t)
2: 점착제
3: 폴리에스테르 필름
4: 롤 (지름 12㎜, 무게 2Kg)
23: 점착제가 적층된 폴리에스테르 필름1: glass (1.1t)
2: adhesive
3: polyester film
4: roll (diameter 12 mm,
23: polyester film laminated pressure-sensitive adhesive
Claims (8)
수학식 1
상기에서, d는 탄젠트 탄성율이고, G″는 손실탄성율이고, G′는 저장탄성율이다.According to claim 1, wherein the acrylic pressure-sensitive adhesive for the optical filter, characterized in that the tangent modulus calculated by the following formula 1 at a low frequency of 1 or less at 30 ℃ 0.15 to 0.4:
Equation 1
In the above, d is tangent modulus, G ″ is loss modulus, and G 'is storage modulus.
수학식 2
상기에서 M은 점착제 전체 질량이고, m은 점착제 중, 겔화된 부분의 질량이다.According to claim 1, wherein the acrylic pressure-sensitive adhesive for the optical filter, characterized in that the gel fraction calculated by Equation 2 below 60%:
Equation 2
In the above, M is the total mass of the pressure-sensitive adhesive, m is the mass of the gelled portion of the pressure-sensitive adhesive.
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020100113951A KR101176426B1 (en) | 2010-11-16 | 2010-11-16 | Anti-mark adhesive for optical filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100113951A KR101176426B1 (en) | 2010-11-16 | 2010-11-16 | Anti-mark adhesive for optical filter |
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| KR101176426B1 true KR101176426B1 (en) | 2012-08-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100587496B1 (en) | 2004-04-26 | 2006-06-08 | 주식회사 에이스 디지텍 | Composition of adhesion containing acrylates resin and the use of its |
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|---|---|---|---|---|
| KR100587496B1 (en) | 2004-04-26 | 2006-06-08 | 주식회사 에이스 디지텍 | Composition of adhesion containing acrylates resin and the use of its |
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