JP5890737B2 - Pressure-sensitive adhesive precursor composition and method for producing pressure-sensitive adhesive tape or sheet - Google Patents
Pressure-sensitive adhesive precursor composition and method for producing pressure-sensitive adhesive tape or sheet Download PDFInfo
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- JP5890737B2 JP5890737B2 JP2012093276A JP2012093276A JP5890737B2 JP 5890737 B2 JP5890737 B2 JP 5890737B2 JP 2012093276 A JP2012093276 A JP 2012093276A JP 2012093276 A JP2012093276 A JP 2012093276A JP 5890737 B2 JP5890737 B2 JP 5890737B2
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- sensitive adhesive
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- polymer
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- 239000004820 Pressure-sensitive adhesive Substances 0.000 title claims description 69
- 239000000203 mixture Substances 0.000 title claims description 40
- 239000002243 precursor Substances 0.000 title claims description 24
- 238000004519 manufacturing process Methods 0.000 title description 7
- 229920000642 polymer Polymers 0.000 claims description 96
- 229920001577 copolymer Polymers 0.000 claims description 57
- -1 2-ethylhexyl Chemical group 0.000 claims description 50
- 239000011347 resin Substances 0.000 claims description 36
- 229920005989 resin Polymers 0.000 claims description 36
- 239000003054 catalyst Substances 0.000 claims description 22
- 239000003431 cross linking reagent Substances 0.000 claims description 22
- 239000005056 polyisocyanate Substances 0.000 claims description 21
- 229920001228 polyisocyanate Polymers 0.000 claims description 21
- 239000010410 layer Substances 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 14
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 12
- 239000003960 organic solvent Substances 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 10
- 239000012711 adhesive precursor Substances 0.000 claims description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 239000012298 atmosphere Substances 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 125000001033 ether group Chemical group 0.000 claims description 4
- 125000006577 C1-C6 hydroxyalkyl group Chemical group 0.000 claims description 2
- 125000003545 alkoxy group Chemical group 0.000 claims description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 27
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 description 26
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 24
- 230000015572 biosynthetic process Effects 0.000 description 22
- 238000003786 synthesis reaction Methods 0.000 description 21
- 239000000243 solution Substances 0.000 description 18
- 239000002390 adhesive tape Substances 0.000 description 17
- 229910000077 silane Inorganic materials 0.000 description 17
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 15
- 229910052757 nitrogen Inorganic materials 0.000 description 15
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 14
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 14
- 239000003795 chemical substances by application Substances 0.000 description 14
- 125000004433 nitrogen atom Chemical group N* 0.000 description 14
- 229920001451 polypropylene glycol Polymers 0.000 description 14
- 239000000178 monomer Substances 0.000 description 12
- 239000012299 nitrogen atmosphere Substances 0.000 description 12
- 239000002904 solvent Substances 0.000 description 12
- 239000000853 adhesive Substances 0.000 description 11
- 230000001070 adhesive effect Effects 0.000 description 11
- 239000002585 base Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 239000004342 Benzoyl peroxide Substances 0.000 description 10
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 10
- 235000019400 benzoyl peroxide Nutrition 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 238000006116 polymerization reaction Methods 0.000 description 10
- 239000012790 adhesive layer Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 8
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 8
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 description 8
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 8
- 239000004743 Polypropylene Substances 0.000 description 7
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 7
- 150000003505 terpenes Chemical class 0.000 description 7
- 235000007586 terpenes Nutrition 0.000 description 7
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 6
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 6
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 6
- 239000003208 petroleum Substances 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- 238000013508 migration Methods 0.000 description 5
- 230000005012 migration Effects 0.000 description 5
- 239000003505 polymerization initiator Substances 0.000 description 5
- 229910015900 BF3 Inorganic materials 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 4
- 150000002009 diols Chemical class 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000005011 phenolic resin Substances 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- 239000004814 polyurethane Substances 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 4
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 4
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 3
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 3
- 239000005058 Isophorone diisocyanate Substances 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 125000002843 carboxylic acid group Chemical group 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- AYOHIQLKSOJJQH-UHFFFAOYSA-N dibutyltin Chemical compound CCCC[Sn]CCCC AYOHIQLKSOJJQH-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 238000005227 gel permeation chromatography Methods 0.000 description 3
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 3
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 229920006267 polyester film Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920003067 (meth)acrylic acid ester copolymer Polymers 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 2
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
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- 239000004793 Polystyrene Substances 0.000 description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- WGQKYBSKWIADBV-UHFFFAOYSA-N benzylamine Chemical compound NCC1=CC=CC=C1 WGQKYBSKWIADBV-UHFFFAOYSA-N 0.000 description 2
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 239000012025 fluorinating agent Substances 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 2
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- YOBOXHGSEJBUPB-MTOQALJVSA-N (z)-4-hydroxypent-3-en-2-one;zirconium Chemical compound [Zr].C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O YOBOXHGSEJBUPB-MTOQALJVSA-N 0.000 description 1
- TYKCBTYOMAUNLH-MTOQALJVSA-J (z)-4-oxopent-2-en-2-olate;titanium(4+) Chemical compound [Ti+4].C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O TYKCBTYOMAUNLH-MTOQALJVSA-J 0.000 description 1
- ZBBLRPRYYSJUCZ-GRHBHMESSA-L (z)-but-2-enedioate;dibutyltin(2+) Chemical compound [O-]C(=O)\C=C/C([O-])=O.CCCC[Sn+2]CCCC ZBBLRPRYYSJUCZ-GRHBHMESSA-L 0.000 description 1
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- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 description 1
- KPAPHODVWOVUJL-UHFFFAOYSA-N 1-benzofuran;1h-indene Chemical compound C1=CC=C2CC=CC2=C1.C1=CC=C2OC=CC2=C1 KPAPHODVWOVUJL-UHFFFAOYSA-N 0.000 description 1
- XLPJNCYCZORXHG-UHFFFAOYSA-N 1-morpholin-4-ylprop-2-en-1-one Chemical compound C=CC(=O)N1CCOCC1 XLPJNCYCZORXHG-UHFFFAOYSA-N 0.000 description 1
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 description 1
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- KANYJWVOXXLHJE-UHFFFAOYSA-J 3,3'-spirobi[2,4,3-benzodioxastannepine]-1,1',5,5'-tetrone Chemical class C(C=1C(C(=O)[O-])=CC=CC1)(=O)[O-].[Sn+4].C(C=1C(C(=O)[O-])=CC=CC1)(=O)[O-] KANYJWVOXXLHJE-UHFFFAOYSA-J 0.000 description 1
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- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- XQBCVRSTVUHIGH-UHFFFAOYSA-L [dodecanoyloxy(dioctyl)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCCCCCC)(CCCCCCCC)OC(=O)CCCCCCCCCCC XQBCVRSTVUHIGH-UHFFFAOYSA-L 0.000 description 1
- 125000004018 acid anhydride group Chemical group 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000005907 alkyl ester group Chemical group 0.000 description 1
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- 125000003368 amide group Chemical group 0.000 description 1
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- 238000005452 bending Methods 0.000 description 1
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- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
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- 125000004093 cyano group Chemical group *C#N 0.000 description 1
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- 239000012024 dehydrating agents Substances 0.000 description 1
- XAUKEHTUWXPUBM-IRYVOTIRSA-N dibutyl (z)-but-2-enedioate;dibutyltin Chemical compound CCCC[Sn]CCCC.CCCCOC(=O)\C=C/C(=O)OCCCC XAUKEHTUWXPUBM-IRYVOTIRSA-N 0.000 description 1
- JGFBRKRYDCGYKD-UHFFFAOYSA-N dibutyl(oxo)tin Chemical compound CCCC[Sn](=O)CCCC JGFBRKRYDCGYKD-UHFFFAOYSA-N 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- YDAQYWWYQPHMAO-UHFFFAOYSA-L dibutyltin(2+);2,3-di(nonyl)phenolate Chemical compound CCCC[Sn+2]CCCC.CCCCCCCCCC1=CC=CC([O-])=C1CCCCCCCCC.CCCCCCCCCC1=CC=CC([O-])=C1CCCCCCCCC YDAQYWWYQPHMAO-UHFFFAOYSA-L 0.000 description 1
- FCDBRTOWQHEDHT-UHFFFAOYSA-N dibutyltin(2+);3-ethyloctan-3-olate Chemical compound CCCC[Sn+2]CCCC.CCCCCC([O-])(CC)CC.CCCCCC([O-])(CC)CC FCDBRTOWQHEDHT-UHFFFAOYSA-N 0.000 description 1
- ZXDVQYBUEVYUCG-UHFFFAOYSA-N dibutyltin(2+);methanolate Chemical compound CCCC[Sn](OC)(OC)CCCC ZXDVQYBUEVYUCG-UHFFFAOYSA-N 0.000 description 1
- NVOGEOJJWIEKGO-WTUPQPTJSA-N dibutyltin;diethyl (z)-but-2-enedioate Chemical compound CCCC[Sn]CCCC.CCOC(=O)\C=C/C(=O)OCC NVOGEOJJWIEKGO-WTUPQPTJSA-N 0.000 description 1
- IIFKGJGNMKYHLT-FGSKAQBVSA-N dibutyltin;dimethyl (z)-but-2-enedioate Chemical compound CCCC[Sn]CCCC.COC(=O)\C=C/C(=O)OC IIFKGJGNMKYHLT-FGSKAQBVSA-N 0.000 description 1
- WRZAGCUJZBBAAW-SWJSCKDZSA-N dibutyltin;dioctyl (z)-but-2-enedioate Chemical compound CCCC[Sn]CCCC.CCCCCCCCOC(=O)\C=C/C(=O)OCCCCCCCC WRZAGCUJZBBAAW-SWJSCKDZSA-N 0.000 description 1
- MMFHQUJCZSYDEK-SWLCOABPSA-N dibutyltin;ditridecyl (z)-but-2-enedioate Chemical compound CCCC[Sn]CCCC.CCCCCCCCCCCCCOC(=O)\C=C/C(=O)OCCCCCCCCCCCCC MMFHQUJCZSYDEK-SWLCOABPSA-N 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- YQGOWXYZDLJBFL-UHFFFAOYSA-N dimethoxysilane Chemical compound CO[SiH2]OC YQGOWXYZDLJBFL-UHFFFAOYSA-N 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- 150000002013 dioxins Chemical class 0.000 description 1
- 238000010556 emulsion polymerization method Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 125000005462 imide group Chemical group 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 230000001050 lubricating effect Effects 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
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229920003145 methacrylic acid copolymer Polymers 0.000 description 1
- GYNNXHKOJHMOHS-UHFFFAOYSA-N methyl-cycloheptane Natural products CC1CCCCCC1 GYNNXHKOJHMOHS-UHFFFAOYSA-N 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- QOHMWDJIBGVPIF-UHFFFAOYSA-N n',n'-diethylpropane-1,3-diamine Chemical compound CCN(CC)CCCN QOHMWDJIBGVPIF-UHFFFAOYSA-N 0.000 description 1
- PHQOGHDTIVQXHL-UHFFFAOYSA-N n'-(3-trimethoxysilylpropyl)ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCCNCCN PHQOGHDTIVQXHL-UHFFFAOYSA-N 0.000 description 1
- MQWFLKHKWJMCEN-UHFFFAOYSA-N n'-[3-[dimethoxy(methyl)silyl]propyl]ethane-1,2-diamine Chemical compound CO[Si](C)(OC)CCCNCCN MQWFLKHKWJMCEN-UHFFFAOYSA-N 0.000 description 1
- DXASQZJWWGZNSF-UHFFFAOYSA-N n,n-dimethylmethanamine;sulfur trioxide Chemical group CN(C)C.O=S(=O)=O DXASQZJWWGZNSF-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
- XCOASYLMDUQBHW-UHFFFAOYSA-N n-(3-trimethoxysilylpropyl)butan-1-amine Chemical compound CCCCNCCC[Si](OC)(OC)OC XCOASYLMDUQBHW-UHFFFAOYSA-N 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- JFOJYGMDZRCSPA-UHFFFAOYSA-J octadecanoate;tin(4+) Chemical compound [Sn+4].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O JFOJYGMDZRCSPA-UHFFFAOYSA-J 0.000 description 1
- IOQPZZOEVPZRBK-UHFFFAOYSA-N octan-1-amine Chemical compound CCCCCCCCN IOQPZZOEVPZRBK-UHFFFAOYSA-N 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003918 potentiometric titration Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- HKJYVRJHDIPMQB-UHFFFAOYSA-N propan-1-olate;titanium(4+) Chemical compound CCCO[Ti](OCCC)(OCCC)OCCC HKJYVRJHDIPMQB-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 150000003606 tin compounds Chemical class 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 238000000954 titration curve Methods 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
- FRGPKMWIYVTFIQ-UHFFFAOYSA-N triethoxy(3-isocyanatopropyl)silane Chemical compound CCO[Si](OCC)(OCC)CCCN=C=O FRGPKMWIYVTFIQ-UHFFFAOYSA-N 0.000 description 1
- 150000003673 urethanes Chemical class 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Description
本発明は、粘着テープ又はシートを製造する際に用いる粘着剤前駆体組成物に関するものである。 The present invention relates to a pressure-sensitive adhesive precursor composition used when producing a pressure-sensitive adhesive tape or sheet.
電子機器や電気機器等を組み立てる際に、各種部品を固定するために粘着テープ又はシートが用いられている。この粘着テープ又はシートは、組み立てた後の電子機器等の内部に残存しているため、耐熱性が要求されることになる。ここで、粘着テープ又はシートの耐熱性とは、以下のような意味を持つものである。すなわち、電子機器等は使用中に高温となるため、粘着テープ又はシートは何度も高温下に暴露されることになるが、この暴露によって粘着テープ又はシートの粘着剤層が劣化しにくく、粘着力が低下しにくいことを意味する。したがって、耐熱性の良好な粘着テープ又はシートとは、電子機器等を長期間使用しても、粘着力が低下しにくく、その結果、固定した部品が外れにくいものを意味している。 Adhesive tapes or sheets are used to fix various components when assembling electronic equipment, electrical equipment, and the like. Since the adhesive tape or sheet remains inside the assembled electronic device or the like, heat resistance is required. Here, the heat resistance of the adhesive tape or sheet has the following meaning. In other words, since electronic devices and the like become hot during use, the adhesive tape or sheet is exposed to high temperatures many times, but this exposure does not easily deteriorate the adhesive layer of the adhesive tape or sheet. It means that power is hard to decline. Therefore, the adhesive tape or sheet having good heat resistance means that the adhesive force is not easily lowered even when an electronic device or the like is used for a long period of time, and as a result, the fixed component is hardly detached.
さらに、電子機器等に使用される粘着テープ又はシートには、各種被着材への密着性も要求される。近年は電子機器等の組み立てには、種々の金属(例えば、ステンレス、アルミ等)、プラスチック(例えば、アクリル、ポリスチレン、ポリアミド、ポリプロピレン等)、ガラス等からなる部品が用いられており、特にこれらの異なる部材からなる部品同士を粘着テープ又はシートにて貼り合わせる場合が増えている。したがって、電子機器等に使用される粘着テープ又はシートにおいては、各種被着材料に対して万遍なく良好な密着性を有することも要求される。 Furthermore, the adhesive tape or sheet used for an electronic device etc. is also required to adhere to various adherends. In recent years, parts made of various metals (for example, stainless steel, aluminum, etc.), plastics (for example, acrylic, polystyrene, polyamide, polypropylene, etc.), glass, etc. have been used for assembling electronic devices. Increasingly, parts made of different members are bonded together with an adhesive tape or sheet. Therefore, the pressure-sensitive adhesive tape or sheet used for an electronic device or the like is required to have good adhesion uniformly to various adherends.
本件出願人は、上記した耐熱性の要求に答える粘着テープ又はシートとして、特許文献1記載に係る発明を提案している。すなわち、特定の末端シリル基ポリマー100質量部と、粘着付与樹脂10〜150質量部と、三フッ化ホウ素及び/又はその錯体、フッ素化剤及びフッ素系無機酸のアルカリ金属塩よりなる群から選ばれたフッ素系化合物0.001〜10質量部とを均一に混合した粘着剤前駆体組成物を、テープ基材又はシート基材の表面に塗布した後、該末端シリル基ポリマーを硬化させることにより、該粘着剤前駆体を粘着剤層とする粘着テープ又はシートの製造方法を提案している(特許文献1、[請求項1])。 The applicant of the present application has proposed the invention according to Patent Document 1 as an adhesive tape or sheet that meets the above heat resistance requirements. That is, selected from the group consisting of 100 parts by mass of a specific terminal silyl group polymer, 10 to 150 parts by mass of a tackifier resin, boron trifluoride and / or its complex, a fluorinating agent, and an alkali metal salt of a fluorinated inorganic acid. By applying the pressure-sensitive adhesive precursor composition uniformly mixed with 0.001 to 10 parts by mass of the obtained fluorine-based compound to the surface of the tape substrate or sheet substrate, the terminal silyl group polymer is cured. Have proposed a method for producing an adhesive tape or sheet using the adhesive precursor as an adhesive layer (Patent Document 1, [Claim 1]).
しかしながら、特許文献1に記載された粘着テープ又はシートの粘着剤層には、硬化触媒として三フッ化ホウ素等が含有されており、電子機器や電気機器等に用いることを忌避する傾向があった。この理由は、フッ素等のハロゲンがイオンマイグレーションを促進する傾向があり、さらに廃棄又は焼却処分する際にダイオキシンを発生する恐れがあるからである。特に、イオン化した金属が陰極側に析出するイオンマイグレーションは、電子機器等に短絡を生じさせるので、問題である。 However, the pressure-sensitive adhesive layer of the pressure-sensitive adhesive tape or sheet described in Patent Document 1 contains boron trifluoride or the like as a curing catalyst, and has a tendency to avoid use in electronic devices and electric devices. . The reason for this is that halogens such as fluorine tend to promote ion migration, and dioxins may be generated during disposal or incineration. In particular, ion migration in which ionized metal is deposited on the cathode side is a problem because it causes a short circuit in an electronic device or the like.
また、硬化触媒として、三フッ化ホウ素に代えて、スズ系触媒等の金属系硬化触媒やその他の硬化触媒を用いることも考えられるが、イオンマイグレーションを促進する傾向があったり、或いは廃棄及び焼却したときの環境上の問題もある。 In addition, it is conceivable to use a metal-based curing catalyst such as a tin-based catalyst or other curing catalyst instead of boron trifluoride as the curing catalyst, but there is a tendency to promote ion migration, or disposal and incineration. There are also environmental problems when doing so.
そこで、本発明者等は、硬化触媒を用いずに、上記した耐熱性及び密着性の要求に答えうる粘着テープ又はシートを得ることを課題とし、鋭意研究を行った。この結果、特定のポリマーと特定の共重合ポリマーとを併用することで、前記課題を解決しうることを見出した。本発明は、かかる知見に基づくものである。 Accordingly, the present inventors have conducted intensive research with the object of obtaining an adhesive tape or sheet that can meet the above-described requirements for heat resistance and adhesion without using a curing catalyst. As a result, it has been found that the above-mentioned problem can be solved by using a specific polymer and a specific copolymer in combination. The present invention is based on such knowledge.
すなわち、本発明は、下記一般式(1)〜(7)で表される高分子化合物よりなる群から選ばれるポリマー(A)100質量部と、重量平均分子量が10万〜100万である(メタ)アクリル酸アルキルエステルと(メタ)アクリル酸との共重合ポリマー(B)0.5〜50質量部と、粘着付与樹脂(C)5〜150質量部とを含有し、実質的に硬化触媒を含有しないことを特徴とする粘着剤前駆体組成物に関するものである。また、この粘着剤前駆体組成物に有機溶剤を添加し均一に混合した溶液を、テープ基材又はシート基材に塗布した後、大気中で加熱することによって該有機溶剤を蒸発させた後、室温下で養生することによりポリマー(A)を硬化させて粘着剤層を形成することを特徴とする粘着テープ又はシートの製造方法に関するものである。
一般式(1)
General formula (1)
[ポリマー(A)について]
本発明で用いるポリマー(A)は、一般式(1)〜(7)で表される高分子化合物の1種よりなるか、又は2種以上の混合物よりなるものである。一般式(1)〜(7)で表される高分子化合物は、ポリオキシプロピレングリコール、ポリオキシエチレングリコール、ポリオキシプロピレントリオール、ポリオキシエチレントリオール、ポリオキシエチレンポリオキシプロピレングリコール又はポリオキシエチレンポリオキシプロピレントリオール等のポリオキシアルキレンエーテルを主体とする化合物に、ウレタン結合を介して、末端に加水分解性シリル基が導入されてなるものである。
[About polymer (A)]
The polymer (A) used in the present invention is composed of one kind of polymer compounds represented by the general formulas (1) to (7) or a mixture of two or more kinds. The polymer compounds represented by the general formulas (1) to (7) are polyoxypropylene glycol, polyoxyethylene glycol, polyoxypropylene triol, polyoxyethylene triol, polyoxyethylene polyoxypropylene glycol or polyoxyethylene poly A compound mainly composed of polyoxyalkylene ether such as oxypropylene triol is introduced with a hydrolyzable silyl group at the terminal through a urethane bond.
一般式(1)〜(7)におけるZは、このポリオキシアルキレンエーテルを主体とする化合物の残基を表している。一般的には、ポリオキシアルキレンエーテル中に一部ジイソシアネート化合物が導入されたものの残基からなるが、ポリオキシアルキレンエーテルのみの残基でもよい。Zにポリオキシアルキレンエーテル系残基を採用することにより、粘着剤層に柔軟さを与えることができる。ポリオキシアルキレンエーテル系残基の分子量は、3,000〜100,000であるのが好ましく、5,000〜90,000であるのがより好ましく、8,000〜80,000であるのが最も好ましい。 Z in the general formulas (1) to (7) represents a residue of a compound mainly composed of this polyoxyalkylene ether. In general, it consists of a residue obtained by partially introducing a diisocyanate compound into a polyoxyalkylene ether, but it may be a residue of only a polyoxyalkylene ether. By adopting a polyoxyalkylene ether residue in Z, the pressure-sensitive adhesive layer can be given flexibility. The molecular weight of the polyoxyalkylene ether residue is preferably 3,000 to 100,000, more preferably 5,000 to 90,000, and most preferably 8,000 to 80,000. preferable.
一般式(1)〜(7)におけるウレタン結合は、一般的には、ポリオキシアルキレンエーテル中に導入されたジイソシアネート化合物のNCO基に由来するものである。そして、このNCO基に、加水分解性シリル基を持つ化合物を結合させることにより、末端に加水分解性シリル基を導入することができる。また、このウレタン結合は、ポリオキシアルキレンエーテルに加水分解性シリル基を持つイソシアネート化合物を反応させて生成されたものであってもよい。この場合は、ウレタン結合の生成と同時に末端に加水分解性シリル基が導入されることになる。 The urethane bond in the general formulas (1) to (7) is generally derived from the NCO group of the diisocyanate compound introduced into the polyoxyalkylene ether. And a hydrolyzable silyl group can be introduce | transduced into the terminal by combining the compound which has a hydrolyzable silyl group with this NCO group. The urethane bond may be generated by reacting a polyoxyalkylene ether with an isocyanate compound having a hydrolyzable silyl group. In this case, a hydrolyzable silyl group is introduced into the terminal simultaneously with the formation of the urethane bond.
加水分解性シリル基は、一般式(1)〜(7)において、
[共重合ポリマー(B)について]
共重合ポリマー(B)は、(メタ)アクリル酸アルキルエステルと(メタ)アクリル酸との共重合体よりなる。なお、「(メタ)アクリル酸」なる表記は、アクリル酸とメタアクリル酸の両者をまとめて表したもので、アクリル酸であってもメタアクリル酸であっても、或いは両者の混合であってもよい。また、「(メタ)アクリレート」と表記するときも同様である。(メタ)アクリル酸アルキルエステルと(メタ)アクリル酸との共重合割合は、(メタ)アクリル酸アルキルエステル:(メタ)アクリル酸=80〜99.5:20〜0.5(質量比)であるのが好ましく、90〜99.5:10〜0.5であるのがより好ましく、92〜99:8〜1であるのが特に好ましく、95〜98:5〜2であるのが最も好ましい。また、アクリル酸の導入量を共重合ポリマー(B)の酸価で表すと、1〜100KOHmg/gであるのが好ましく、10〜80KOHmg/gであるのがより好ましく、15〜65KOHmg/gであるのが最も好ましい。なお、酸価の測定方法は「JIS K 2501(2003)石油製品及び潤滑油−中和価試験方法」に基づいて行う。具体的には、試料をキシレンとジメチルホルムアミド(1+1)を混合した滴定溶剤に溶かし、電位差滴定法により0.1mol/L水酸化カリウム・エタノール溶液で滴定し、滴定曲線上の変曲点を終点として、水酸化カリウム溶液の終点までの滴定量から、酸価を算出する。
[Copolymer (B)]
The copolymer (B) is made of a copolymer of (meth) acrylic acid alkyl ester and (meth) acrylic acid. The notation “(meth) acrylic acid” is a collective representation of both acrylic acid and methacrylic acid, whether acrylic acid or methacrylic acid, or a mixture of both. Also good. The same applies to “(meth) acrylate”. The copolymerization ratio of (meth) acrylic acid alkyl ester and (meth) acrylic acid is (meth) acrylic acid alkyl ester: (meth) acrylic acid = 80 to 99.5: 20 to 0.5 (mass ratio). It is preferably 90 to 99.5: 10 to 0.5, more preferably 92 to 99: 8 to 1, and most preferably 95 to 98: 5-2. . Moreover, when the introduction amount of acrylic acid is represented by the acid value of the copolymer (B), it is preferably 1 to 100 KOHmg / g, more preferably 10 to 80 KOHmg / g, and 15 to 65 KOHmg / g. Most preferably. In addition, the measuring method of an acid value is performed based on "JIS K 2501 (2003) petroleum product and lubricating oil-neutralization number test method". Specifically, the sample was dissolved in a titration solvent in which xylene and dimethylformamide (1 + 1) were mixed, and titrated with a 0.1 mol / L potassium hydroxide / ethanol solution by potentiometric titration, and the inflection point on the titration curve was the end point. The acid value is calculated from the titration amount up to the end point of the potassium hydroxide solution.
(メタ)アクリル酸アルキルエステルとしては、エチル(メタ)アクリレート、メチル(メタ)アクリレート、n−ブチル(メタ)アクリレート又は2−エチルヘキシル(メタ)アクリレートを単独又は混合して用いることができる。(メタ)アクリル酸としては、アクリル酸又はメタアクリル酸を単独又は混合して用いることができる。共重合ポリマー(B)には、(メタ)アクリル酸アルキルエステルと(メタ)アクリル酸以外に他の単量体(モノマー)が共重合されていてもよい。たとえば、スルホン酸基含有モノマー、リン酸基含有モノマー、シアノ基含有モノマー、ビニルエステル類、芳香族ビニル化合物などの凝集力・耐熱性向上成分や、カルボキシル基含有モノマー、酸無水物基含有モノマー、2−ヒドロキシエチルアクリレート等のヒドロキシル基含有モノマー、アミド基含有モノマー、アミノ基含有モノマー、イミド基含有モノマー、エポキシ基含有モノマー、N−アクリロイルモルホリン、ビニルエーテル類等の接着力向上や架橋化基点として働く官能基を有する成分を適宜用いることができる。その他の成分は1種又は2種以上併用して用いることができる。 As the (meth) acrylic acid alkyl ester, ethyl (meth) acrylate, methyl (meth) acrylate, n-butyl (meth) acrylate or 2-ethylhexyl (meth) acrylate can be used alone or in combination. As (meth) acrylic acid, acrylic acid or methacrylic acid can be used alone or in combination. In the copolymerized polymer (B), other monomers (monomer) may be copolymerized in addition to the (meth) acrylic acid alkyl ester and (meth) acrylic acid. For example, sulfonic acid group-containing monomers, phosphoric acid group-containing monomers, cyano group-containing monomers, vinyl esters, aromatic vinyl compounds and other cohesive strength / heat resistance improving components, carboxyl group-containing monomers, acid anhydride group-containing monomers, It works as a crosslinking base point for improving the adhesion of hydroxyl group-containing monomers such as 2-hydroxyethyl acrylate, amide group-containing monomers, amino group-containing monomers, imide group-containing monomers, epoxy group-containing monomers, N-acryloylmorpholine, vinyl ethers, etc. A component having a functional group can be used as appropriate. Other components can be used alone or in combination of two or more.
共重合ポリマー(B)は、従来公知の溶液重合法やエマルジョン重合法で製造され、重量平均分子量は10万〜100万に調整する。重量平均分子量がこの範囲外であると、粘着剤層の粘着性が低下したり、粘着剤層が硬くなる。共重合ポリマー(B)の重量平均分子量は、30万〜90万であるのが好ましい。重量平均分子量の測定方法は、GPC法による。具体的には、GPC測定装置として東ソー株式会社製「ゲルパーミエーションクロマトグラフィHLC−8220」、展開溶媒としてTHF(テトラヒドロフラン)、カラムとして東ソー株式会社製「TSKgelSuperHZM−H」、標準物質としてポリスチレンを用いた。 The copolymer (B) is produced by a conventionally known solution polymerization method or emulsion polymerization method, and the weight average molecular weight is adjusted to 100,000 to 1,000,000. When the weight average molecular weight is outside this range, the adhesiveness of the pressure-sensitive adhesive layer is lowered or the pressure-sensitive adhesive layer becomes hard. The copolymer polymer (B) preferably has a weight average molecular weight of 300,000 to 900,000. The measuring method of a weight average molecular weight is based on GPC method. Specifically, “Gel Permeation Chromatography HLC-8220” manufactured by Tosoh Corporation as a GPC measuring apparatus, THF (tetrahydrofuran) as a developing solvent, “TSKgelSuperHZM-H” manufactured by Tosoh Corporation as a column, and polystyrene as a standard substance were used. .
[粘着付与樹脂(C)について]
本発明における粘着付与樹脂(C)としては、粘着剤を得る際に用いられる公知の粘着付与樹脂が用いられる。たとえば、ロジン、重合ロジン、水添ロジン、ロジンエステル等のロジン系樹脂;テルペンフェノール樹脂、芳香族変性テルペン樹脂、水添テルペン樹脂、ロジンフェノール樹脂等のテルペン系樹脂;脂肪族石油樹脂;芳香族系石油樹脂;芳香族系水添石油樹脂、ジシクロペンタジエン系水添石油樹脂、脂肪族系水添石油樹脂等の各種水添石油樹脂;クマロンインデン樹脂;スチレン系樹脂;マレイン酸系樹脂;アルキルフェノール樹脂;キシレン樹脂等を用いることができる。特に、本発明においては、テルペンフェノール樹脂等のテルペン系樹脂やスチレン系樹脂を用いるのが好ましい。
[About tackifying resin (C)]
As tackifying resin (C) in this invention, well-known tackifying resin used when obtaining an adhesive is used. For example, rosin resin such as rosin, polymerized rosin, hydrogenated rosin, rosin ester; terpene resin such as terpene phenol resin, aromatic modified terpene resin, hydrogenated terpene resin, rosin phenol resin; aliphatic petroleum resin; aromatic Various petroleum resins; various hydrogenated petroleum resins such as aromatic hydrogenated petroleum resins, dicyclopentadiene hydrogenated petroleum resins, aliphatic hydrogenated petroleum resins; coumarone indene resins; styrene resins; maleic acid resins; An alkylphenol resin; a xylene resin or the like can be used. In particular, in the present invention, it is preferable to use a terpene resin such as a terpene phenol resin or a styrene resin.
[各成分の配合量について]
ポリマー(A)、共重合ポリマー(B)及び粘着付与樹脂(C)の配合割合は、以下のとおりである。共重合ポリマー(B)は、ポリマー(A)100質量部に対して0.5〜50質量部配合され、好ましくは1〜8質量部、より好ましくは3〜5質量部配合される。共重合ポリマー(B)の配合量が0.5質量部未満であると、ポリマー(A)が硬化しにくいため好ましくない。共重合ポリマー(B)の配合量が50質量部を超えると、粘着剤層の耐熱性及び密着性が低下し好ましくない。粘着付与樹脂(C)は、ポリマー(A)100質量部に対して5〜150質量部配合され、好ましくは10〜130質量部配合される。粘着付与樹脂(C)の配合量が5質量部未満であると、粘着剤層の密着性が低下し好ましくない。粘着付与樹脂(C)の配合量が150質量部を超えると、粘着剤層の耐熱性が低下し好ましくない。
[About the amount of each component]
The blending ratio of the polymer (A), the copolymerized polymer (B), and the tackifier resin (C) is as follows. The copolymer (B) is blended in an amount of 0.5 to 50 parts by weight, preferably 1 to 8 parts by weight, and more preferably 3 to 5 parts by weight with respect to 100 parts by weight of the polymer (A). When the blending amount of the copolymer polymer (B) is less than 0.5 parts by mass, the polymer (A) is difficult to cure, which is not preferable. When the amount of the copolymerized polymer (B) exceeds 50 parts by mass, the heat resistance and adhesiveness of the pressure-sensitive adhesive layer are lowered, which is not preferable. The tackifier resin (C) is blended in an amount of 5 to 150 parts by weight, preferably 10 to 130 parts by weight, based on 100 parts by weight of the polymer (A). When the amount of the tackifier resin (C) is less than 5 parts by mass, the adhesiveness of the pressure-sensitive adhesive layer is lowered, which is not preferable. When the compounding quantity of tackifying resin (C) exceeds 150 mass parts, the heat resistance of an adhesive layer falls and it is unpreferable.
[硬化触媒について]
本発明においては、実質的に硬化触媒を含有しないものである。すなわち、特許文献1に記載されている三フッ化ホウ素及び/又はその錯体、フッ素化剤、フッ素系無機酸のアルカリ金属塩等のフッ素系化合物を含有しておらず、さらに、チタンテトラブトキシド、テトラプロピルチタネート、チタンテトラアセチルアセトナート、チタンアセトアセテートなどのチタン化合物;ジブチルスズジラウレート、ジブチルスズマレエート、ジブチルスズフタレート、ジブチルスズジオクテート、ジブチルスズジエチルヘキサノレート、ジブチルスズジメチルマレエート、ジブチルスズジエチルマレエート、ジブチルスズジブチルマレエート、ジブチルスズジオクチルマレエート、ジブチルスズジトリデシルマレエート、ジブチルスズジベンジルマレエート、ジブチルスズジアセテート、ジオクチルスズジエチルマレエート、ジオクチルスズジオクチルマレエート、ジブチルスズジメトキサイド、ジブチルスズジノニルフェノキサイド、ジブテニルスズオキサイド、ジブチルスズジアセチルアセトナート、ジブチルスズジエチルアセトアセトナート、ジブチルスズオキサイドとフタル酸エステルとの反応物等の4価のスズ化合物;オクチル酸スズ、ナフテン酸スズ、ステアリン酸スズ、バーサチック酸スズなどの2価のスズ化合物;アルミニウムトリスアセチルアセトナート、アルミニウムトリスエチルアセトアセテート、ジイソプロポキシアルミニウムエチルアセトアセテートなどの有機アルミニウム化合物類;ジルコニウムテトラアセチルアセトナートなどのジルコニウム化合物類;オクチル酸鉛;ブチルアミン、オクチルアミン、ジブチルアミン、モノエタノールアミン、ジエタノールアミン、トリエタノールアミン、ジエチレントリアミン、トリエチレンテトラミン、オレイルアミン、シクロヘキシルアミン、ベンジルアミン、ジエチルアミノプロピルアミン、キシリレンジアミン、トリエチレンジアミン、グアニジン、ジフェニルグアニジン、2,4,6−トリス(ジメチルアミノメチル)フェノール、モルホリン、N−メチルモルホリン、2−エチル−4−メチルイミダゾール、1,8−ジアザビシクロ(5,4,0)ウンデセン−7(DBU)などのアミン系化合物;過剰のポリアミンと多塩基酸とから得られる低分子量ポリアミド樹脂;過剰のポリアミンとエポキシ化合物との反応生成物;γ−アミノプロピルトリメトキシシラン、N−(β−アミノエチル)アミノプロピルメチルジメトキシシランなどのアミノ基を有するシランカップリング剤;シラノール縮合触媒等の従来公知の硬化触媒も含有していないものである。
[Curing catalyst]
In the present invention, the curing catalyst is not substantially contained. That is, it does not contain a boron compound such as boron trifluoride and / or its complex, a fluorinating agent, and an alkali metal salt of a fluorine inorganic acid described in Patent Document 1, and further includes titanium tetrabutoxide, Titanium compounds such as tetrapropyl titanate, titanium tetraacetylacetonate, titanium acetoacetate; dibutyltin dilaurate, dibutyltin maleate, dibutyltin phthalate, dibutyltin dioctate, dibutyltin diethylhexanolate, dibutyltin dimethyl maleate, dibutyltin diethyl maleate, dibutyltin dibutyl Maleate, Dibutyltin dioctyl maleate, Dibutyltin ditridecyl maleate, Dibutyltin dibenzyl maleate, Dibutyltin diacetate, Dioctyltin diethyl Tetravalent diates such as reate, dioctyltin dioctyl maleate, dibutyltin dimethoxide, dibutyltin dinonylphenoxide, dibutenyltin oxide, dibutyltin diacetylacetonate, dibutyltin diethylacetoacetonate, reaction product of dibutyltin oxide and phthalate Tin compounds; divalent tin compounds such as tin octylate, tin naphthenate, tin stearate and tin versatate; organoaluminum compounds such as aluminum trisacetylacetonate, aluminum trisethylacetoacetate, diisopropoxyaluminum ethylacetoacetate Zirconium compounds such as zirconium tetraacetylacetonate; lead octylate; butylamine, octylamine, dibutylamine Monoethanolamine, diethanolamine, triethanolamine, diethylenetriamine, triethylenetetramine, oleylamine, cyclohexylamine, benzylamine, diethylaminopropylamine, xylylenediamine, triethylenediamine, guanidine, diphenylguanidine, 2,4,6-tris (dimethylamino) Methyl) phenol, morpholine, N-methylmorpholine, 2-ethyl-4-methylimidazole, amine compounds such as 1,8-diazabicyclo (5,4,0) undecene-7 (DBU); excess polyamine and polybasic Low molecular weight polyamide resin obtained from acid; reaction product of excess polyamine and epoxy compound; γ-aminopropyltrimethoxysilane, N- (β-aminoethyl) aminopropylme Silane coupling agent having an amino group such as dimethoxysilane; conventionally known curing catalyst such as silanol condensation catalysts are also those which do not contain.
「実質的に」含有していないという意味は、ポリマー(A)を硬化させるための触媒を含有していないという意味である。したがって、ポリマー(A)、共重合ポリマー(B)及び粘着付与樹脂(C)を製造する際に用いる触媒が含まれていることがあるが、この触媒は微量含まれていてもよいということである。微量というのは、たとえば、粘着剤前駆体組成物中に500ppm未満程度である。 The meaning of not containing “substantially” means that a catalyst for curing the polymer (A) is not contained. Therefore, although the catalyst used when manufacturing a polymer (A), a copolymerization polymer (B), and tackifying resin (C) may be contained, this catalyst may be contained in trace amount. is there. The trace amount is, for example, about less than 500 ppm in the pressure-sensitive adhesive precursor composition.
[ポリイソシアネート架橋剤について]
ポリイソシアネート架橋剤(D)は、分子内に2個以上のイソシアネート基を含有するものであれば特に限定されず、従来公知のものを用いることができる。ポリイソシアネート架橋剤(D)は、架橋助剤として機能し、補助的にポリマー(A)及び/又は共重合ポリマー(B)の架橋を促進させ、粘着剤層の耐熱性と密着性をより一層向上させるものである。ポリイソシアネート架橋剤(D)の配合量は、たとえば、ポリマー(A)100質量部に対して、0.1〜10質量部が好ましく、0.5〜8質量部がより好ましく、1〜5質量部が最も好ましい。
[About polyisocyanate crosslinking agents]
A polyisocyanate crosslinking agent (D) will not be specifically limited if it contains two or more isocyanate groups in a molecule | numerator, A conventionally well-known thing can be used. The polyisocyanate cross-linking agent (D) functions as a cross-linking aid, and auxiliaryly promotes cross-linking of the polymer (A) and / or the copolymerized polymer (B), thereby further improving the heat resistance and adhesion of the pressure-sensitive adhesive layer. It is to improve. The blending amount of the polyisocyanate crosslinking agent (D) is, for example, preferably 0.1 to 10 parts by weight, more preferably 0.5 to 8 parts by weight, and 1 to 5 parts by weight with respect to 100 parts by weight of the polymer (A). Part is most preferred.
[その他の成分について]
粘着剤前駆体組成物には、その他に以下のような化合物乃至物質を添加混合しておいてもよい。例えば、老化防止剤、脱水剤、充填剤、可塑剤、希釈剤、難燃剤又は顔料等を添加混合しておいてもよい。
[Other ingredients]
In addition, the following compounds or substances may be added to and mixed with the pressure-sensitive adhesive precursor composition. For example, an antioxidant, a dehydrating agent, a filler, a plasticizer, a diluent, a flame retardant, or a pigment may be added and mixed.
[粘着剤前駆体組成物について]
粘着剤前駆体組成物は、ポリマー(A)、共重合ポリマー(B)及び粘着付与樹脂(C)を均一に混合することにより、調製する。必要であれば、その際にポリイソシアネート架橋剤(D)も混合する。各成分を混合すると、硬化及び架橋反応が進行するために、粘着テープ又はシートを製造する直前に混合する。したがって、本発明に係る粘着剤前駆体組成物を、粘着テープ又はシートの製造業者に提供するときは、2液又は3液に分けてキットとして提供する。具体的には、ポリマー(A)と粘着付与樹脂(C)の混合物からなる剤と、共重合ポリマー(B)からなる剤との2液に分けて提供する。また、必要によりポリイソシアネート架橋剤(D)を用いるときは、これをさらに別個の剤として、3液に分けて提供する。ポリマー(A)、共重合ポリマー(B)、粘着付与樹脂(C)及び必要によりポリイソシアネート架橋剤(D)を均一に混合する際、一般的に、粘度調整のため有機溶剤を添加して行う。有機溶剤としては、エタノール等のアルコール類、酢酸エチル、トルエン、メチルシクロヘキサン等が用いられる。有機溶剤の添加量は、粘着剤前駆体組成物100質量部に対して、一般的に50〜100質量部である。
[Adhesive precursor composition]
The pressure-sensitive adhesive precursor composition is prepared by uniformly mixing the polymer (A), the copolymer (B), and the tackifier resin (C). If necessary, the polyisocyanate crosslinking agent (D) is also mixed at that time. When the components are mixed, curing and crosslinking reaction proceed, so mixing is performed immediately before the production of the adhesive tape or sheet. Therefore, when providing the adhesive precursor composition which concerns on this invention to the manufacturer of an adhesive tape or a sheet | seat, it divides into 2 liquids or 3 liquids, and provides them as a kit. Specifically, it is provided separately in two liquids: an agent composed of a mixture of polymer (A) and tackifying resin (C) and an agent composed of copolymerized polymer (B). Moreover, when using a polyisocyanate crosslinking agent (D) as needed, this is further divided into three liquids as a separate agent. When the polymer (A), the copolymer (B), the tackifier resin (C), and the polyisocyanate crosslinking agent (D), if necessary, are mixed uniformly, an organic solvent is generally added to adjust the viscosity. . As the organic solvent, alcohols such as ethanol, ethyl acetate, toluene, methylcyclohexane and the like are used. The addition amount of the organic solvent is generally 50 to 100 parts by mass with respect to 100 parts by mass of the pressure-sensitive adhesive precursor composition.
[粘着テープ又はシートの製造方法について]
粘着テープ又はシートは、粘着剤前駆体組成物をテープ基材又はシート基材に塗布し、硬化させて粘着剤層を形成することにより得られる。本発明においては、以下の方法で粘着テープ又はシートを得るのが好ましい。まず、前記したように、粘着剤前駆体組成物に有機溶剤を添加し均一に混合した溶液を調整する。有機溶剤を添加するのは、粘度調整してテープ基材又はシート基材に塗布しやすくするためである。テープ基材又はシート基材としては、アルミニウム箔等の金属箔、ポリエステル等の合成樹脂製フィルム、各種の発泡体又は各種の不織布等が用いられる。本発明においては、耐熱性に優れたアルミニウム箔又は耐熱性ポリエステルフィルムを用いるのが好ましい。粘着剤前駆体組成物を含む溶液は、テープ基材又はシート基材の一方表面に塗布されてもよいし、両表面に塗布されてもよい。後者の場合は、両面粘着テープ又はシートとなる。また、粘着剤前駆体組成物を含む溶液の塗布方法は、従来公知の方法を採用でき、たとえばナイフコーター法やロールコーター法等を用いることができる。さらに、粘着剤前駆体組成物を含む溶液の塗布厚も従来と同様であり、5〜200μm程度である。
[About manufacturing method of adhesive tape or sheet]
The pressure-sensitive adhesive tape or sheet is obtained by applying the pressure-sensitive adhesive precursor composition to a tape base material or sheet base material and curing it to form a pressure-sensitive adhesive layer. In the present invention, it is preferable to obtain an adhesive tape or sheet by the following method. First, as described above, an organic solvent is added to the pressure sensitive adhesive precursor composition to prepare a uniformly mixed solution. The organic solvent is added to adjust the viscosity so that it can be easily applied to a tape substrate or a sheet substrate. As a tape base material or a sheet base material, a metal foil such as an aluminum foil, a synthetic resin film such as polyester, various foams, various nonwoven fabrics, or the like is used. In this invention, it is preferable to use the aluminum foil or heat resistant polyester film excellent in heat resistance. The solution containing the pressure sensitive adhesive precursor composition may be applied to one surface of the tape substrate or the sheet substrate, or may be applied to both surfaces. In the case of the latter, it becomes a double-sided adhesive tape or sheet. Moreover, the conventionally well-known method can be employ | adopted for the coating method of the solution containing an adhesive precursor composition, for example, a knife coater method, a roll coater method, etc. can be used. Furthermore, the application | coating thickness of the solution containing an adhesive precursor composition is also the same as the past, and is about 5-200 micrometers.
塗布後、大気中で加熱する。加熱温度は40〜150℃が好ましく、特に80〜150℃であるのがより好ましい。この加熱によって、溶液中の有機溶媒を蒸発させる。また、大気中の湿気によって、ポリマー(A)の加水分解性シリル基が一部縮合して三次元網目構造となって一部硬化する。その後、室温下で養生することにより、硬化が進行して粘着剤層が形成される。このポリマー(A)の硬化は、共重合ポリマー(B)に導入されているカルボン酸基によって促進される。すなわち、本発明に係る粘着剤前駆体組成物中には硬化触媒が含有されていないのであるが、共重合ポリマー(B)が従来の硬化触媒の役割を果たすのである。また、ポリイソシアネート架橋剤(D)を混合させておくと、共重合ポリマー(B)が架橋し、三次元網目構造がより緊密となって硬化し、粘着剤層が形成される。以上のようにして、テープ基材又はシート基材の片面又は両面に粘着剤層を持つ粘着テープ又はシートを製造することができる。 After application, heat in air. The heating temperature is preferably 40 to 150 ° C, and more preferably 80 to 150 ° C. By this heating, the organic solvent in the solution is evaporated. In addition, the hydrolyzable silyl group of the polymer (A) is partially condensed by moisture in the atmosphere to be partially cured as a three-dimensional network structure. Thereafter, by curing at room temperature, curing proceeds and an adhesive layer is formed. Curing of the polymer (A) is promoted by carboxylic acid groups introduced into the copolymer (B). That is, although the curing agent is not contained in the pressure sensitive adhesive precursor composition according to the present invention, the copolymer (B) plays the role of a conventional curing catalyst. Further, when the polyisocyanate crosslinking agent (D) is mixed, the copolymer polymer (B) is crosslinked, the three-dimensional network structure is more tightly cured, and an adhesive layer is formed. As described above, a pressure-sensitive adhesive tape or sheet having a pressure-sensitive adhesive layer on one side or both sides of a tape base material or sheet base material can be produced.
以上のような方法で得られた粘着テープ又は粘着シートは、従来使用されている各種用途に用いられるが、特に、耐熱性及び密着性に優れており、従来の硬化触媒を含有していないので、電子機器や電気機器等を組み立てる際の固定用粘着テープ又はシートとして用いられる。 The pressure-sensitive adhesive tape or pressure-sensitive adhesive sheet obtained by the method as described above is used for various conventionally used applications, but is particularly excellent in heat resistance and adhesion, and does not contain a conventional curing catalyst. It is used as an adhesive tape or sheet for fixing when assembling an electronic device or an electric device.
本発明に係る粘着剤前駆体組成物は、ポリマー(A)100質量部と、共重合ポリマー(B)0.5〜50質量部と、粘着付与樹脂(C)5〜150質量部とを含有し、実質的に硬化触媒を含有しないものである。この粘着剤前駆体組成物は、硬化触媒を含有しないにも拘わらず、大気中の湿気でポリマー(A)が硬化する。これは、共重合ポリマー(B)に導入されているカルボン酸基の作用による。したがって、本発明に係る粘着剤前駆体組成物をテープ基材又はシート基材に塗布した後、硬化させて粘着剤層を形成し、粘着テープ又はシートを得ると、硬化したポリマー(A)と共重合ポリマー(B)とが併存した状態となる。硬化したポリマー(A)は耐熱性に優れており、硬化したポリマー(A)及び共重合ポリマー(B)の両者共に粘着性を呈しているので、各種被着材に対する密着性に優れている。よって、本発明に係る粘着剤前駆体組成物を用いて得られた粘着テープ又はシートは、耐熱性と密着性に優れるという効果を奏する。しかも従来の硬化触媒を含有していないので、イオンマイグレーションを促進する傾向もなく、廃棄及び焼却したときの環境上の悪影響を少ないという効果を奏する。以上の結果、本発明に係る粘着剤前駆体組成物を用いて得られた粘着テープ又はシートは、電子機器や電気機器等の組み立てに用いるのに有益である。 The pressure-sensitive adhesive precursor composition according to the present invention contains 100 parts by mass of the polymer (A), 0.5 to 50 parts by mass of the copolymer (B), and 5 to 150 parts by mass of the tackifier resin (C). However, it does not substantially contain a curing catalyst. Although this adhesive precursor composition does not contain a curing catalyst, the polymer (A) is cured by moisture in the atmosphere. This is due to the action of the carboxylic acid group introduced into the copolymer (B). Accordingly, after the pressure-sensitive adhesive precursor composition according to the present invention is applied to a tape base material or a sheet base material, it is cured to form a pressure-sensitive adhesive layer, and when a pressure-sensitive adhesive tape or sheet is obtained, the cured polymer (A) and The copolymerized polymer (B) coexists. The cured polymer (A) is excellent in heat resistance, and since both the cured polymer (A) and the copolymerized polymer (B) exhibit adhesiveness, the adhesiveness to various adherends is excellent. Therefore, the pressure-sensitive adhesive tape or sheet obtained using the pressure-sensitive adhesive precursor composition according to the present invention has the effect of being excellent in heat resistance and adhesion. In addition, since it does not contain a conventional curing catalyst, there is no tendency to promote ion migration, and there is an effect that there are few adverse environmental effects when discarded and incinerated. As a result of the above, the pressure-sensitive adhesive tape or sheet obtained by using the pressure-sensitive adhesive precursor composition according to the present invention is useful for use in assembling electronic devices and electric devices.
また、ポリイソシアネート架橋剤(D)を混合した粘着剤前駆体組成物を用いた場合、ポリイソシアネート架橋剤(D)が共重合ポリマー(B)と架橋結合し、より緊密な三次元網目構造となる。したがって、耐熱性及び密着性をより向上させうるという効果を奏する。 Further, when the pressure-sensitive adhesive precursor composition mixed with the polyisocyanate crosslinking agent (D) is used, the polyisocyanate crosslinking agent (D) is crosslinked with the copolymer polymer (B) to form a tighter three-dimensional network structure. Become. Therefore, there is an effect that heat resistance and adhesion can be further improved.
以下、本発明を実施例に基づいて詳細に説明するが、本発明は実施例に限定されるものではない。本発明は、特定の化学構造を有するポリマー(A)と特定の共重合ポリマー(B)と粘着付与樹脂(C)とを混合した粘着剤前駆体組成物は、触媒を配合せずとも硬化性が発現し、これを硬化させてなる粘着剤層は耐熱性に優れるとともに各種被着材料への密着性に優れるとの知見に基づくものとして、解釈されるべきである。 EXAMPLES Hereinafter, although this invention is demonstrated in detail based on an Example, this invention is not limited to an Example. In the present invention, a pressure-sensitive adhesive precursor composition obtained by mixing a polymer (A) having a specific chemical structure, a specific copolymer polymer (B), and a tackifier resin (C) is curable without adding a catalyst. And the pressure-sensitive adhesive layer formed by curing this should be interpreted as being based on the knowledge that it has excellent heat resistance and excellent adhesion to various adherends.
[シリル化剤(SE−1)の合成]
反応容器に、N−アミノエチル−3−アミノプロピルトリメトキシシランを222質量部、アクリル酸メチルを172質量部仕込み、窒素雰囲気下にて撹拌混合しながら、80℃で10時間反応させることで、シリル化剤となるシラン化合物(SE−1)を得た。シラン化合物(SE−1)は、加水分解性シリル基と窒素原子含有結合の窒素原子とがプロピレン基を介して結合しており、さらに当該窒素原子はエチレン基を介して環境の異なる窒素含有結合を構成する窒素原子に結合している。
[Synthesis of Silylating Agent (SE-1)]
By charging 222 parts by mass of N-aminoethyl-3-aminopropyltrimethoxysilane and 172 parts by mass of methyl acrylate in a reaction vessel and stirring and mixing in a nitrogen atmosphere, the reaction is carried out at 80 ° C. for 10 hours. A silane compound (SE-1) serving as a silylating agent was obtained. In the silane compound (SE-1), a hydrolyzable silyl group and a nitrogen atom of a nitrogen atom-containing bond are bonded via a propylene group, and the nitrogen atom is bonded to a nitrogen-containing bond having a different environment via an ethylene group. Is bonded to the nitrogen atom constituting
[シリル化剤(SE−2)の合成]
反応容器に、N−アミノエチル−3−アミノプロピルメチルジメトキシシランを206質量部、アクリル酸メチルを172質量部仕込み、窒素雰囲気下にて撹拌混合しながら、80℃で10時間反応させることで、シリル化剤となるシラン化合物(SE−2)を得た。シラン化合物(SE−2)は、加水分解性基のケイ素基と窒素原子含有結合の窒素原子とがプロピレン基を介して結合しており、さらに当該窒素原子はエチレン基を介して環境の異なる窒素含有結合を構成する窒素原子に結合している。
[Synthesis of Silylating Agent (SE-2)]
In a reaction vessel, 206 parts by mass of N-aminoethyl-3-aminopropylmethyldimethoxysilane and 172 parts by mass of methyl acrylate were charged and reacted at 80 ° C. for 10 hours while stirring and mixing in a nitrogen atmosphere. A silane compound (SE-2) serving as a silylating agent was obtained. In the silane compound (SE-2), a hydrolyzable silicon group and a nitrogen atom containing a nitrogen atom-containing bond are bonded via a propylene group, and the nitrogen atom is a nitrogen having a different environment via an ethylene group. It is bonded to the nitrogen atom constituting the contained bond.
[シリル化剤(SE−3)の合成]
反応容器に、γ−アミノプロピルトリメトキシシランを179質量部、アクリル酸メチルを86質量部仕込み、窒素雰囲気下にて撹拌混合しながら、80℃で10時間反応させることで、シリル化剤となるシラン化合物(SE−3)を得た。シラン化合物(SE−3)は、加水分解性基のケイ素基と窒素原子含有結合の窒素原子とがプロピレン基を介して結合している。
[Synthesis of Silylating Agent (SE-3)]
A reaction vessel is charged with 179 parts by mass of γ-aminopropyltrimethoxysilane and 86 parts by mass of methyl acrylate, and is reacted at 80 ° C. for 10 hours while stirring and mixing in a nitrogen atmosphere, thereby becoming a silylating agent. A silane compound (SE-3) was obtained. In the silane compound (SE-3), a hydrolyzable silicon group and a nitrogen atom containing a nitrogen atom-containing bond are bonded via a propylene group.
[シリル化剤(SE−4)の合成]
反応容器に、γ−アミノプロピルトリメトキシシランを179質量部、マレイン酸ジエチルを172質量部仕込み、窒素雰囲気下にて撹拌混合しながら、25℃で10時間反応させた。その後に25℃で7日間養生することで、シリル化剤となるシラン化合物(SE−4)を得た。シラン化合物(SE−4)は、加水分解性基のケイ素基と窒素原子含有結合の窒素原子とがプロピレン基を介して結合している。
[Synthesis of Silylating Agent (SE-4)]
A reaction vessel was charged with 179 parts by mass of γ-aminopropyltrimethoxysilane and 172 parts by mass of diethyl maleate and reacted at 25 ° C. for 10 hours while stirring and mixing in a nitrogen atmosphere. Thereafter, curing was performed at 25 ° C. for 7 days to obtain a silane compound (SE-4) serving as a silylating agent. In the silane compound (SE-4), the silicon group of the hydrolyzable group and the nitrogen atom of the nitrogen atom-containing bond are bonded through a propylene group.
[ポリマー(A)の合成例1]
反応容器に、プレミノールS4015(ポリオキシプロピレンジオール、分子量15,000:旭硝子社製)1000質量部、イソホロンジイソシアネート26.6質量部(NCO/OH比=1.7)及びジオクチルスズジラウレート0.05質量部を仕込み、窒素雰囲気下にて撹拌混合しながら、85℃で5時間反応させて、主鎖の主体がポリオキシプロピレンで、主鎖中にウレタン結合が導入されたウレタンプレポリマーを得た。
このウレタンプレポリマー1000質量部に、上記シラン化合物(SE−1)38.9質量部を添加し、窒素雰囲気下にて撹拌混合しながら80℃で1時間反応させることで、ポリマー(a−1)を得た。IRでイソシアネート基の吸収(2265cm-1)の消失より反応の進行を確認した。
このポリマー(a−1)は、一般式(1)及び/又は(2)で表される加水分解性シリル基(X=メトキシ基、n=0)を有し、Zはポリオキシプロピレンで、一部ウレタン結合が導入されてなるものの残基である。
[Synthesis Example 1 of Polymer (A)]
In a reaction vessel, preminol S4015 (polyoxypropylene diol, molecular weight 15,000: manufactured by Asahi Glass Co., Ltd.) 1000 parts by mass, isophorone diisocyanate 26.6 parts by mass (NCO / OH ratio = 1.7) and dioctyltin dilaurate 0.05 parts by mass Then, the mixture was reacted at 85 ° C. for 5 hours while stirring and mixing in a nitrogen atmosphere to obtain a urethane prepolymer in which the main chain was mainly polyoxypropylene and urethane bonds were introduced into the main chain.
By adding 38.9 parts by mass of the silane compound (SE-1) to 1000 parts by mass of this urethane prepolymer, the polymer (a-1) is reacted at 80 ° C. for 1 hour with stirring and mixing in a nitrogen atmosphere. ) The progress of the reaction was confirmed by the disappearance of isocyanate group absorption (2265 cm @ -1) by IR.
This polymer (a-1) has a hydrolyzable silyl group (X = methoxy group, n = 0) represented by the general formula (1) and / or (2), Z is polyoxypropylene, It is the residue of a part in which a urethane bond is introduced.
[ポリマー(A)の合成例2]
シラン化合物(SE−1)に代えて、上記シラン化合物(SE−2)37.3質量部を用いる他は、合成例1と同様にしてポリマー(a−2)を得た。このポリマー(a−2)は、一般式(1)及び/又は(2)で表される加水分解性シリル基(X=メトキシ基、R=メチル基、n=1)を有し、Zはポリオキシプロピレンで、一部ウレタン結合が導入されてなるものの残基である。
[Synthesis Example 2 of Polymer (A)]
A polymer (a-2) was obtained in the same manner as in Synthesis Example 1 except that 37.3 parts by mass of the silane compound (SE-2) was used instead of the silane compound (SE-1). This polymer (a-2) has a hydrolyzable silyl group (X = methoxy group, R = methyl group, n = 1) represented by the general formula (1) and / or (2), and Z is It is a residue of polyoxypropylene in which a urethane bond is partially introduced.
[ポリマー(A)の合成例3]
シラン化合物(SE−1)に代えて、上記シラン化合物(SE−3)26.2質量部を用いる他は、合成例1と同様にしてシリル基含有ポリマー(a−3)を得た。このポリマー(a−3)は、一般式(3)で表される加水分解性シリル基(X=メトキシ基、n=0)を有し、Zはポリオキシプロピレンで、一部ウレタン結合が導入されてなるものの残基である。
[Synthesis Example 3 of Polymer (A)]
A silyl group-containing polymer (a-3) was obtained in the same manner as in Synthesis Example 1, except that 26.2 parts by mass of the silane compound (SE-3) was used instead of the silane compound (SE-1). This polymer (a-3) has a hydrolyzable silyl group (X = methoxy group, n = 0) represented by the general formula (3), Z is polyoxypropylene, and some urethane bonds are introduced. It is the residue of what is made.
[ポリマー(A)の合成例4]
シラン化合物(SE−1)に代えて、N−(n−ブチル)−3−アミノプロピルトリメトキシシラン23.2質量部を用いる他は、合成例1と同様にしてポリマー(a−4)を得た。このポリマー(a−4)は、一般式(6)で表される加水分解性シリル基(X=メトキシ基、n=0)を有し、Zはポリオキシプロピレンで、一部ウレタン結合が導入されてなるものの残基である。
[Synthesis Example 4 of Polymer (A)]
The polymer (a-4) was synthesized in the same manner as in Synthesis Example 1 except that 23.2 parts by mass of N- (n-butyl) -3-aminopropyltrimethoxysilane was used instead of the silane compound (SE-1). Obtained. This polymer (a-4) has a hydrolyzable silyl group (X = methoxy group, n = 0) represented by the general formula (6), Z is polyoxypropylene, and a urethane bond is partially introduced. It is the residue of what is made.
[ポリマー(A)の合成例5]
反応容器に、プレミノールS4015(ポリオキシプロピレンジオール、分子量15,000:旭硝子社製)1000質量部、3−イソシアネートプロピルトリエトキシシラン34.8質量部を仕込み、窒素雰囲気下にて撹拌混合しながら85℃で2時間反応させることで、シリル基含有ポリマー(a−5)を得た。IRでイソシアネート基の吸収(2265cm-1)の消失より反応の進行を確認した。このポリマー(a−5)は、一般式(7)で表される加水分解性シリル基(X=エトキシ基、n=0)を有し、Zはポリオキシプロピレンジオールの残基である
[Synthesis Example 5 of Polymer (A)]
A reaction vessel was charged with 1000 parts by weight of Preminol S4015 (polyoxypropylene diol, molecular weight 15,000: manufactured by Asahi Glass Co., Ltd.) and 34.8 parts by weight of 3-isocyanatopropyltriethoxysilane, and the mixture was stirred and mixed under a nitrogen atmosphere. By reacting at 2 ° C. for 2 hours, a silyl group-containing polymer (a-5) was obtained. The progress of the reaction was confirmed by the disappearance of isocyanate group absorption (2265 cm @ -1) by IR. This polymer (a-5) has a hydrolyzable silyl group (X = ethoxy group, n = 0) represented by the general formula (7), and Z is a residue of polyoxypropylene diol.
[ポリマー(A)の合成例6]
プレミノールS4015に代えてプレミノールS4012(ポリオキシプロピレンジオール、分子量10,000:旭硝子社製)1000質量部を用い、イソホロンジイソシアネートを26.6質量部から37.5質量部に増量し、かつ、シラン化合物(SE−1)38.9質量部に代えて上記シラン化合物(SE−4)49.1質量部を用いる他は、合成例1と同様にしてポリマー(a−6)を得た。このポリマー(a−6)は、一般式(4)で表される加水分解性シリル基(X=メトキシ基、n=0)を有し、Zはポリオキシプロピレンで、一部ウレタン結合が導入されてなるものの残基である。
[Synthesis Example 6 of Polymer (A)]
Instead of preminol S4015, 1000 parts by mass of preminol S4012 (polyoxypropylene diol, molecular weight 10,000: manufactured by Asahi Glass Co., Ltd.) was used, and isophorone diisocyanate was increased from 26.6 parts by mass to 37.5 parts by mass, and a silane compound (SE-1) A polymer (a-6) was obtained in the same manner as in Synthesis Example 1 except that 49.1 parts by mass of the silane compound (SE-4) was used instead of 38.9 parts by mass. This polymer (a-6) has a hydrolyzable silyl group (X = methoxy group, n = 0) represented by the general formula (4), Z is polyoxypropylene, and a urethane bond is partially introduced. It is the residue of what is made.
[ポリマー(A)の合成例7]
プレミノールS4015に代えてプレミノールS4022(ポリオキシプロピレンジオール、分子量22,000:旭硝子社製)1000質量部を用い、イソホロンジイソシアネートを26.6質量部から21.8質量部に減量し、かつ、シラン化合物(SE−1)38.9質量部に代えてN−フェニル−3−アミノプロピルトリメトキシシラン25.0質量部を用いる他は、合成例1と同様にしてポリマー(a−7)を得た。このポリマー(a−7)は、一般式(5)で表される加水分解性シリル基(X=メトキシ基、n=0)を有し、Zはポリオキシプロピレンで、一部ウレタン結合が導入されてなるものの残基である。
[Synthesis Example 7 of Polymer (A)]
In place of preminol S4015, 1000 parts by mass of preminol S4022 (polyoxypropylenediol, molecular weight 22,000: manufactured by Asahi Glass Co., Ltd.) was used, and isophorone diisocyanate was reduced from 26.6 parts by mass to 21.8 parts by mass, and a silane compound (SE-1) A polymer (a-7) was obtained in the same manner as in Synthesis Example 1 except that 25.0 parts by mass of N-phenyl-3-aminopropyltrimethoxysilane was used instead of 38.9 parts by mass. . This polymer (a-7) has a hydrolyzable silyl group (X = methoxy group, n = 0) represented by the general formula (5), Z is polyoxypropylene, and a urethane bond is partially introduced. It is the residue of what is made.
[共重合ポリマー(B)の合成例1]
攪拌器付き反応容器中に、2−エチルヘキシルアクリレート(2EHA)63質量部、ブチルアクリレート(BA)27質量部、酢酸ビニル(VAC)7.5質量部及びアクリル酸(AA)2.5質量部を、重合溶媒である酢酸エチル150質量部中に仕込み、重合開始剤である過酸化ベンゾイル(BPO)0.2質量部を用いて、窒素雰囲気下、80℃で5時間反応を行って、透明で均一な反応溶液を得た。反応溶液から重合溶媒を除去し、共重合ポリマー(b−1)を得た。共重合ポリマー(b−1)の重量平均分子量は、65万であった。
[Synthesis Example 1 of Copolymer (B)]
In a reaction vessel equipped with a stirrer, 63 parts by mass of 2-ethylhexyl acrylate (2EHA), 27 parts by mass of butyl acrylate (BA), 7.5 parts by mass of vinyl acetate (VAC) and 2.5 parts by mass of acrylic acid (AA) were added. The mixture was charged in 150 parts by mass of ethyl acetate as a polymerization solvent, and 0.2 parts by mass of benzoyl peroxide (BPO) as a polymerization initiator was reacted at 80 ° C. for 5 hours in a nitrogen atmosphere. A homogeneous reaction solution was obtained. The polymerization solvent was removed from the reaction solution to obtain a copolymer (b-1). The weight average molecular weight of the copolymer (b-1) was 650,000.
[共重合ポリマー(B)の合成例2]
攪拌器付き反応容器中に、2−エチルヘキシルアクリレート(2EHA)42.5質量部、ブチルアクリレート(BA)42.5質量部、酢酸ビニル(VAC)7.5質量部及びアクリル酸(AA)7.5質量部を、重合溶媒である酢酸エチル150質量部中に仕込み、重合開始剤である過酸化ベンゾイル(BPO)0.2質量部を用いて、窒素雰囲気下、80℃で5時間反応を行って、透明で均一な反応溶液を得た。反応溶液から重合溶媒を除去し、共重合ポリマー(b−2)を得た。共重合ポリマー(b−2)の重量平均分子量は、54万であった。
[Synthesis Example 2 of Copolymer (B)]
In a reaction vessel equipped with a stirrer, 42.5 parts by mass of 2-ethylhexyl acrylate (2EHA), 42.5 parts by mass of butyl acrylate (BA), 7.5 parts by mass of vinyl acetate (VAC) and acrylic acid (AA) 7. 5 parts by mass was charged into 150 parts by mass of ethyl acetate as a polymerization solvent, and reacted at 80 ° C. for 5 hours in a nitrogen atmosphere using 0.2 parts by mass of benzoyl peroxide (BPO) as a polymerization initiator. Thus, a transparent and uniform reaction solution was obtained. The polymerization solvent was removed from the reaction solution to obtain a copolymer (b-2). The weight average molecular weight of the copolymer (b-2) was 540,000.
[共重合ポリマー(B)の合成例3]
攪拌器付き反応容器中に、2−エチルヘキシルアクリレート(2EHA)91.3質量部、酢酸ビニル(VAC)7.5質量部、アクリル酸(AA)1.0質量部及び2−ヒドロキシエチルメタクリレート(2−HEMA)0.2質量部を、重合溶媒である酢酸エチル150質量部中に仕込み、重合開始剤である過酸化ベンゾイル(BPO)0.2質量部を用いて、窒素雰囲気下、80℃で5時間反応を行って、透明で均一な反応溶液を得た。反応溶液から重合溶媒を除去し、共重合ポリマー(b−3)を得た。共重合ポリマー(b−3)の重量平均分子量は、51万であった。
[Synthesis Example 3 of Copolymer (B)]
In a reaction vessel equipped with a stirrer, 91.3 parts by mass of 2-ethylhexyl acrylate (2EHA), 7.5 parts by mass of vinyl acetate (VAC), 1.0 part by mass of acrylic acid (AA) and 2-hydroxyethyl methacrylate (2 -HEMA) 0.2 parts by mass in 150 parts by mass of ethyl acetate as a polymerization solvent, and 0.2 parts by mass of benzoyl peroxide (BPO) as a polymerization initiator at 80 ° C. in a nitrogen atmosphere. The reaction was performed for 5 hours to obtain a transparent and uniform reaction solution. The polymerization solvent was removed from the reaction solution to obtain a copolymer (b-3). The weight average molecular weight of the copolymer (b-3) was 510,000.
[共重合ポリマー(B)の合成例4]
攪拌器付き反応容器中に、ブチルアクリレート(BA)91.3質量部、酢酸ビニル(VAC)7.5質量部、アクリル酸(AA)1.0質量部及び2−ヒドロキシエチルメタクリレート(2−HEMA)0.2質量部を、重合溶媒である酢酸エチル150質量部中に仕込み、重合開始剤である過酸化ベンゾイル(BPO)0.2質量部を用いて、窒素雰囲気下、80℃で5時間反応を行って、透明で均一な反応溶液を得た。反応溶液から重合溶媒を除去し、共重合ポリマー(b−4)を得た。共重合ポリマー(b−4)の重量平均分子量は、43万であった。
[Synthesis Example 4 of Copolymer (B)]
In a reaction vessel equipped with a stirrer, 91.3 parts by mass of butyl acrylate (BA), 7.5 parts by mass of vinyl acetate (VAC), 1.0 part by mass of acrylic acid (AA) and 2-hydroxyethyl methacrylate (2-HEMA) ) 0.2 parts by mass in 150 parts by mass of ethyl acetate as a polymerization solvent, and 0.2 parts by mass of benzoyl peroxide (BPO) as a polymerization initiator in a nitrogen atmosphere at 80 ° C. for 5 hours. The reaction was performed to obtain a transparent and uniform reaction solution. The polymerization solvent was removed from the reaction solution to obtain a copolymer (b-4). The weight average molecular weight of the copolymer (b-4) was 430,000.
[共重合ポリマー(B)の合成例5]
攪拌器付き反応容器中に、2−エチルヘキシルアクリレート(2EHA)57.6質量部、ブチルアクリレート(BA)38.4質量部及びアクリル酸(AA)4.0質量部を、重合溶媒である酢酸エチル150質量部中に仕込み、重合開始剤である過酸化ベンゾイル(BPO)0.2質量部を用いて、窒素雰囲気下、80℃で5時間反応を行って、透明で均一な反応溶液を得た。反応溶液から重合溶媒を除去し、共重合ポリマー(b−5)を得た。共重合ポリマー(b−5)の重量平均分子量は、72万であった。
[Synthesis Example 5 of Copolymer (B)]
In a reaction vessel equipped with a stirrer, 57.6 parts by mass of 2-ethylhexyl acrylate (2EHA), 38.4 parts by mass of butyl acrylate (BA) and 4.0 parts by mass of acrylic acid (AA) were mixed with ethyl acetate as a polymerization solvent. Into 150 parts by mass, 0.2 parts by mass of benzoyl peroxide (BPO), which is a polymerization initiator, was reacted in a nitrogen atmosphere at 80 ° C. for 5 hours to obtain a transparent and uniform reaction solution. . The polymerization solvent was removed from the reaction solution to obtain a copolymer (b-5). The weight average molecular weight of the copolymer (b-5) was 720,000.
[粘着剤前駆体組成物の調製及び粘着シートの製造]
[実施例1]
ポリマー(a−1)95質量部に、溶媒として酢酸エチル100質量部と、粘着付与樹脂としてテルペンフェノール樹脂(ヤスハラケミカル社製、商品名「YSポリスターT−130」66質量部及び商品名「YSポリスターU−160」34質量部)100質量部を添加混合し、均一に撹拌して、混合物を得た。さらに、この混合物に共重合ポリマー(b−1)5質量部、ポリイソシアネート架橋剤(日本ポリウレタン工業社製、商品名「コロネートL」)1質量部を添加混合し、均一に撹拌して、粘着剤前駆体組成物を含む溶液を得た。
この粘着剤前駆体組成物を含む溶液を、厚さ25μmのポリエステルフィルムの一方表面に、塗布厚が60μm程度となるようにナイフコーターを用いて塗布した。その後、120℃で10分間、大気中で加熱することにより、酢酸エチルを蒸発させると共に、ポリマー(a−1)を一部硬化させ、粘着剤層を片面に有するフィルムを得た。さらに粘着剤層の硬化を完全なものとするために23℃で1週間養生し、ポリエステルフィルムの片面に粘着剤層が積層されてなる粘着シートを得た。
[Preparation of pressure-sensitive adhesive precursor composition and production of pressure-sensitive adhesive sheet]
[Example 1]
95 parts by mass of polymer (a-1), 100 parts by mass of ethyl acetate as a solvent, and terpene phenol resin (manufactured by Yasuhara Chemical Co., Ltd., trade name “YS Polystar T-130” as a tackifier resin and trade name “YS Polystar”) 100 parts by mass of U-160 (34 parts by mass) were added and mixed, and stirred uniformly to obtain a mixture. Further, 5 parts by mass of the copolymer (b-1) and 1 part by mass of a polyisocyanate cross-linking agent (manufactured by Nippon Polyurethane Industry Co., Ltd., trade name “Coronate L”) were added to and mixed with this mixture, and the mixture was stirred uniformly. A solution containing the agent precursor composition was obtained.
The solution containing the pressure sensitive adhesive precursor composition was applied to one surface of a 25 μm thick polyester film using a knife coater so that the coating thickness was about 60 μm. Then, while heating at 120 degreeC for 10 minute (s) in air | atmosphere, while evaporating ethyl acetate, the polymer (a-1) was partially hardened and the film which has an adhesive layer on one side was obtained. Furthermore, in order to complete the curing of the pressure-sensitive adhesive layer, it was cured at 23 ° C. for 1 week to obtain a pressure-sensitive adhesive sheet in which the pressure-sensitive adhesive layer was laminated on one side of the polyester film.
[実施例2]
ポリマー(a−1)に代えて、ポリマー(a−2)を用いた他は、実施例1と同様にして粘着シートを得た。
[Example 2]
A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1 except that the polymer (a-2) was used instead of the polymer (a-1).
[実施例3]
ポリマー(a−1)に代えてポリマー(a−3)を用い、かつ、ポリイソシアネート架橋剤を添加しない他は、実施例1と同様にして粘着シートを得た。
[Example 3]
A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1 except that the polymer (a-3) was used in place of the polymer (a-1) and no polyisocyanate crosslinking agent was added.
[実施例4]
ポリマー(a−1)95質量部に代えてポリマー(a−4)80質量部を用い、かつ、共重合ポリマー(b−1)5質量部に代えて共重合ポリマー(b−2)20質量部を用い、さらにポリイソシアネート架橋剤を添加しない他は、実施例1と同様にして粘着シートを得た。
[Example 4]
80 parts by mass of polymer (a-4) is used instead of 95 parts by mass of polymer (a-1), and 20 parts by mass of copolymer (b-2) instead of 5 parts by mass of copolymer (b-1) A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1, except that the polyisocyanate crosslinking agent was not added.
[実施例5]
ポリマー(a−1)95質量部に代えてポリマー(a−5)80質量部を用い、かつ、共重合ポリマー(b−1)5質量部に代えて共重合ポリマー(b−2)20質量部を用い、さらにポリイソシアネート架橋剤を添加しない他は、実施例1と同様にして粘着シートを得た。
[Example 5]
80 parts by mass of polymer (a-5) is used in place of 95 parts by mass of polymer (a-1), and 20 parts by mass of copolymer (b-2) in place of 5 parts by mass of copolymer (b-1) A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1, except that the polyisocyanate crosslinking agent was not added.
[実施例6]
ポリマー(a−1)を95質量部から75質量部に減らし、かつ、共重合ポリマー(b−1)5質量部に代えて共重合ポリマー(b−3)25質量部を用い、さらにポリイソシアネート架橋剤を添加しない他は、実施例1と同様にして粘着シートを得た。
[Example 6]
The polymer (a-1) is reduced from 95 parts by weight to 75 parts by weight, and 25 parts by weight of the copolymer (b-3) is used in place of 5 parts by weight of the copolymer (b-1). A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1 except that no crosslinking agent was added.
[実施例7]
共重合ポリマー(b−1)に代えて、共重合ポリマー(b−4)10質量部を用いた他は、実施例1と同様にして粘着シートを得た。
[Example 7]
A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1 except that 10 parts by mass of the copolymer (b-4) was used instead of the copolymer (b-1).
[実施例8]
ポリマー(a−1)を95質量部から90質量部に減らし、かつ、共重合ポリマー(b−1)を5質量部から10質量部に増やした他は、実施例1と同様にして粘着シートを得た。
[Example 8]
A pressure-sensitive adhesive sheet as in Example 1, except that the polymer (a-1) was reduced from 95 parts by weight to 90 parts by weight and the copolymer polymer (b-1) was increased from 5 parts by weight to 10 parts by weight. Got.
[実施例9]
共重合ポリマー(b−1)に代えて、共重合ポリマー(b−2)を用いた他は、実施例1と同様にして粘着シートを得た。
[Example 9]
A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1 except that the copolymer (b-2) was used instead of the copolymer (b-1).
[実施例10]
共重合ポリマー(b−1)に代えて、共重合ポリマー(b−5)を用いた他は、実施例1と同様にして粘着シートを得た。
[Example 10]
A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1 except that the copolymer (b-5) was used instead of the copolymer (b-1).
[実施例11]
ポリイソシアネート架橋剤(日本ポリウレタン工業、商品名「コロネートL」)に代えて、ポリイソシアネート架橋剤(住化バイエルウレタン社製、商品名「デスモジュールI」)を用いた他は、実施例8と同様にして粘着シートを得た。
[Example 11]
Example 8 except that a polyisocyanate crosslinking agent (manufactured by Sumika Bayer Urethane Co., Ltd., trade name “Desmodur I”) was used instead of the polyisocyanate crosslinking agent (Nippon Polyurethane Industry, trade name “Coronate L”). Similarly, an adhesive sheet was obtained.
[実施例12]
ポリイソシアネート架橋剤(日本ポリウレタン工業社製、商品名「コロネートL」)を添加しなかった他は、実施例8と同様にして粘着シートを得た。
[Example 12]
A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 8 except that the polyisocyanate crosslinking agent (trade name “Coronate L”, manufactured by Nippon Polyurethane Industry Co., Ltd.) was not added.
[実施例13]
ポリマー(a−1)95質量部に代えてポリマー(a−6)80質量部を用い、かつ、共重合ポリマー(b−1)5質量部に代えて共重合ポリマー(b−2)20質量部を用いる他は、実施例1と同様にして粘着シートを得た。
[Example 13]
80 parts by mass of polymer (a-6) is used instead of 95 parts by mass of polymer (a-1), and 20 parts by mass of copolymer (b-2) instead of 5 parts by mass of copolymer (b-1) An adhesive sheet was obtained in the same manner as in Example 1 except that the part was used.
[実施例14]
ポリマー(a−6)に代えてポリマー(a−7)を用いる他は、実施例13と同様にして粘着シートを得た。
[Example 14]
A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 13 except that the polymer (a-7) was used instead of the polymer (a-6).
[比較例1]
ポリマー(a−1)に代えて、変成シリコーン系シリル基含有ポリマー(カネカ社製、商品名「SAX725」)を用いた他は、実施例1と同様にして粘着シートを得た。ここで、変成シリコーン系シリル基含有ポリマーは、その分子中に加水分解性シリル基(X=メトキシ基、R=メチル基、n=1)を有し、Zがポリオキシプロピレンエーテル系残基であるが、加水分解性シリル基とZとの間に窒素原子含有結合を有しないポリマーであり、本発明の構成要件を満たさないものである。
[Comparative Example 1]
A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1 except that a modified silicone-based silyl group-containing polymer (manufactured by Kaneka Corporation, trade name “SAX725”) was used instead of the polymer (a-1). Here, the modified silicone-based silyl group-containing polymer has a hydrolyzable silyl group (X = methoxy group, R = methyl group, n = 1) in the molecule, and Z is a polyoxypropylene ether-based residue. However, the polymer does not have a nitrogen atom-containing bond between the hydrolyzable silyl group and Z, and does not satisfy the constituent requirements of the present invention.
[比較例2]
共重合ポリマー(b−1)を用いずに、かつ、ポリイソシアネート架橋剤(日本ポリウレタン工業社製、商品名「コロネートL」)を添加しなかった他は、実施例1と同様にして粘着シートを得た。
[Comparative Example 2]
Adhesive sheet in the same manner as in Example 1 except that the copolymer (b-1) was not used and a polyisocyanate crosslinking agent (trade name “Coronate L” manufactured by Nippon Polyurethane Industry Co., Ltd.) was not added. Got.
[比較例3]
共重合ポリマー(b−1)に代えて、(メタ)アクリル酸エステル共重合体(日本合成化学社製、商品名「コーポニールN7136」)を用いた他は、実施例8と同様にして粘着シートを得た。ここで、商品名「コーポニールN7136」は、カルボン酸基が導入されていない(メタ)アクリル酸エステル系共重合体であり、本発明の構成要件を満たさないものである。
[Comparative Example 3]
In the same manner as in Example 8 except that a (meth) acrylic acid ester copolymer (manufactured by Nippon Synthetic Chemical Co., Ltd., trade name “Cooponyl N7136”) was used instead of the copolymer (b-1). A sheet was obtained. Here, the trade name “Cooponyl N7136” is a (meth) acrylic acid ester copolymer into which a carboxylic acid group is not introduced, and does not satisfy the constituent requirements of the present invention.
実施例1〜14及び比較例1〜3に係る方法で得られた粘着シートについて、以下の性能評価を行った。
[粘着剤層の硬化性評価]
23℃で1週間養生する間、8時間養生した時点で、ヘキサンで脱脂した指で粘着剤層に触れて、粘着剤層の指への転着の有無を確認した。転着の無い場合を「○」と評価し、有る場合を「×」と評価した。この結果を表1に示した。
The following performance evaluation was performed about the adhesive sheet obtained by the method which concerns on Examples 1-14 and Comparative Examples 1-3.
[Evaluation of curability of adhesive layer]
While curing at 23 ° C. for 1 week, the adhesive layer was touched with a finger degreased with hexane at the point of curing for 8 hours, and the presence or absence of transfer of the adhesive layer to the finger was confirmed. The case where there was no transfer was evaluated as “◯”, and the case where it was present was evaluated as “x”. The results are shown in Table 1.
[粘着剤層の密着性評価−180°はく離接着強さ(N/mm2)の測定−]
各粘着シートの180°はく離接着強さ(N/mm2)を、以下の方法で測定した。まず、被着体として、30mm幅で150mm長のステンレス板(SUS304)、アクリル樹脂板(クラレ社製「コモグラスP」透明)、ポリプロピレン樹脂板(新神戸電機社製「コウベポリシートPP(PP−007)」を準備した。一方、各粘着シートから、25mm幅で150mm長の短冊状試験片(試料テープ)を採取した。23℃相対湿度55%の環境下で、各試料テープをイソプロピルアルコールで脱脂した各被着体にはり合わせ、20分養生後、引張試験器を用いて試験体に対して180°方向に引きはがした際の接着強さ(N/mm2)を測定した。引張速度は300mm/分とした。180°はく離接着強さ(N/mm2)の結果を表1に示した。なお、表1中、SUSはステンレス板、Acはアクリル樹脂板、PPはポリプロピレン樹脂板のことである。
[Adhesion evaluation of pressure-sensitive adhesive layer-Measurement of 180 ° peel adhesion strength (N / mm 2 )-]
The 180 ° peel adhesion strength (N / mm 2 ) of each pressure-sensitive adhesive sheet was measured by the following method. First, as an adherend, a stainless plate (SUS304) having a width of 30 mm and a length of 150 mm, an acrylic resin plate (transparent “Komoray P” manufactured by Kuraray), a polypropylene resin plate (“Kobe Poly Sheet PP (PP-007) manufactured by Shin-Kobe Electric Machinery Co., Ltd.” On the other hand, a strip-shaped test piece (sample tape) having a width of 25 mm and a length of 150 mm was collected from each adhesive sheet. Each sample tape was degreased with isopropyl alcohol in an environment of 23 ° C. and 55% relative humidity. After bonding to each adherend and curing for 20 minutes, the tensile strength (N / mm 2 ) when peeled in the direction of 180 ° with respect to the specimen was measured using a tensile tester. The results of 180 ° peel adhesion strength (N / mm 2 ) are shown in Table 1. In Table 1, SUS is a stainless steel plate, Ac is an acrylic resin plate, and PP is a porous material. It is a polypropylene resin plate.
[表1]
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
密 着 性 評 価
硬化性評価 ━━━━━━━━━━━
SUS Ac PP
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
実施例1 ○ 21 22 18
実施例2 ○ 26 21 17
実施例3 ○ 40 38 37
実施例4 ○ 23 24 19
実施例5 ○ 24 22 23
実施例6 ○ 20 19 21
実施例7 ○ 24 22 18
実施例8 ○ 23 25 19
実施例9 ○ 19 22 18
実施例10 ○ 18 19 16
実施例11 ○ 18 21 16
実施例12 ○ 20 21 21
実施例13 ○ 22 23 22
実施例14 ○ 23 17 22
比較例1 × − − −
比較例2 × − − −
比較例3 × − − −
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
[Table 1]
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Evaluation of tightness
Curability evaluation ━━━━━━━━━━━
SUS Ac PP
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Example 1 ○ 21 22 18
Example 2 ○ 26 21 17
Example 3 ○ 40 38 37
Example 4 ○ 23 24 19
Example 5 ○ 24 22 23
Example 6 ○ 20 19 21
Example 7 ○ 24 22 18
Example 8 ○ 23 25 19
Example 9 ○ 19 22 18
Example 10 ○ 18 19 16
Example 11 ○ 18 21 16
Example 12 ○ 20 21 21
Example 13 ○ 22 23 22
Example 14 ○ 23 17 22
Comparative Example 1 × − − −
Comparative Example 2 × − − −
Comparative Example 3 × − − −
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
比較例1で用いた変成シリコーン系シリル基含有ポリマーは、一般式(1)〜(7)で示された本発明で用いるポリマー(A)の構造を持っていないため、変成シリコーン系シリル基含有ポリマーが硬化せず、粘着シートが得られなかった。この事は、加水分解性シリル基の近傍に窒素原子含有結合を有するポリマー(A)が優れた硬化性を有していることを示す結果である。また、比較例2及び3は、本発明で用いる特定の共重合ポリマー(B)を用いていないため、ポリマー(A)が硬化せず、粘着シートが得られなかった。この事は、共重合ポリマー(B)がポリマー(A)の硬化に寄与していることを示す結果である。これに対して、実施例1〜14で得られた粘着シートは、各種被着材に対する密着性に優れていることが分かる。さらに、ポリマー(A)が十分に硬化しているため、耐熱性にも優れたものであった。なお、ポリイソシアネート架橋剤を用いている実施例1、2及び7〜14は、ポリイソシアネート架橋剤を用いていない実施例3〜6及び12に比べて、耐熱性がより向上していた。また、各粘着シートは、ハロゲン化合物等の硬化触媒を含有していないため、イオンマイグレーションや環境面で悪影響を与えることがなく、電子機器等の固定用シートに用いて有益である。 Since the modified silicone silyl group-containing polymer used in Comparative Example 1 does not have the structure of the polymer (A) used in the present invention represented by the general formulas (1) to (7), it contains a modified silicone silyl group-containing polymer. The polymer was not cured and an adhesive sheet could not be obtained. This is a result showing that the polymer (A) having a nitrogen atom-containing bond in the vicinity of the hydrolyzable silyl group has excellent curability. In Comparative Examples 2 and 3, since the specific copolymer (B) used in the present invention was not used, the polymer (A) was not cured and an adhesive sheet was not obtained. This is a result showing that the copolymer (B) contributes to the curing of the polymer (A). On the other hand, it turns out that the adhesive sheet obtained in Examples 1-14 is excellent in the adhesiveness with respect to various adherends. Furthermore, since the polymer (A) was sufficiently cured, it was excellent in heat resistance. In addition, Example 1, 2, and 7-14 which used the polyisocyanate crosslinking agent had heat resistance improved more compared with Examples 3-6 and 12 which did not use the polyisocyanate crosslinking agent. In addition, each adhesive sheet does not contain a curing catalyst such as a halogen compound, so that it does not adversely affect ion migration or the environment, and is useful for fixing sheets for electronic devices and the like.
Claims (4)
重量平均分子量が10万〜100万である(メタ)アクリル酸アルキルエステルと(メタ)アクリル酸との共重合ポリマー(B)0.5〜50質量部と、
粘着付与樹脂(C)5〜150質量部とを含有し、実質的に硬化触媒を含有しないことを特徴とする粘着剤前駆体組成物。
一般式(1)
0.5 to 50 parts by mass of a copolymer (B) of (meth) acrylic acid alkyl ester and (meth) acrylic acid having a weight average molecular weight of 100,000 to 1,000,000,
A pressure-sensitive adhesive precursor composition containing 5 to 150 parts by mass of a tackifier resin (C) and substantially free of a curing catalyst.
General formula (1)
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