JP5930168B2 - 粘着付与樹脂エマルジョン、エマルジョン型粘着剤組成物、およびフィルムラベル用粘着剤組成物 - Google Patents
粘着付与樹脂エマルジョン、エマルジョン型粘着剤組成物、およびフィルムラベル用粘着剤組成物 Download PDFInfo
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- JP5930168B2 JP5930168B2 JP2012018288A JP2012018288A JP5930168B2 JP 5930168 B2 JP5930168 B2 JP 5930168B2 JP 2012018288 A JP2012018288 A JP 2012018288A JP 2012018288 A JP2012018288 A JP 2012018288A JP 5930168 B2 JP5930168 B2 JP 5930168B2
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- 239000000203 mixture Substances 0.000 title claims description 33
- 239000003995 emulsifying agent Substances 0.000 claims description 25
- -1 nitrogen-containing compound Chemical class 0.000 claims description 25
- 229920000642 polymer Polymers 0.000 claims description 17
- 239000000178 monomer Substances 0.000 claims description 16
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 13
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 12
- 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 claims description 12
- 238000009835 boiling Methods 0.000 claims description 12
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- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
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- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium peroxydisulfate Substances [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 3
- VAZSKTXWXKYQJF-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)OOS([O-])=O VAZSKTXWXKYQJF-UHFFFAOYSA-N 0.000 description 3
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
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- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
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- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical group CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 1
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- WYGWHHGCAGTUCH-UHFFFAOYSA-N 2-[(2-cyano-4-methylpentan-2-yl)diazenyl]-2,4-dimethylpentanenitrile Chemical compound CC(C)CC(C)(C#N)N=NC(C)(C#N)CC(C)C WYGWHHGCAGTUCH-UHFFFAOYSA-N 0.000 description 1
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 description 1
- GELMWIVBBPAMIO-UHFFFAOYSA-N 2-methylbutan-2-amine Chemical compound CCC(C)(C)N GELMWIVBBPAMIO-UHFFFAOYSA-N 0.000 description 1
- BTOVVHWKPVSLBI-UHFFFAOYSA-N 2-methylprop-1-enylbenzene Chemical compound CC(C)=CC1=CC=CC=C1 BTOVVHWKPVSLBI-UHFFFAOYSA-N 0.000 description 1
- DXIJHCSGLOHNES-UHFFFAOYSA-N 3,3-dimethylbut-1-enylbenzene Chemical compound CC(C)(C)C=CC1=CC=CC=C1 DXIJHCSGLOHNES-UHFFFAOYSA-N 0.000 description 1
- FRIBMENBGGCKPD-UHFFFAOYSA-N 3-(2,3-dimethoxyphenyl)prop-2-enal Chemical compound COC1=CC=CC(C=CC=O)=C1OC FRIBMENBGGCKPD-UHFFFAOYSA-N 0.000 description 1
- ZUQOBHTUMCEQBG-UHFFFAOYSA-N 4-amino-5-hydroxynaphthalene-1,7-disulfonic acid Chemical compound OS(=O)(=O)C1=CC(O)=C2C(N)=CC=C(S(O)(=O)=O)C2=C1 ZUQOBHTUMCEQBG-UHFFFAOYSA-N 0.000 description 1
- VGVHNLRUAMRIEW-UHFFFAOYSA-N 4-methylcyclohexan-1-one Chemical compound CC1CCC(=O)CC1 VGVHNLRUAMRIEW-UHFFFAOYSA-N 0.000 description 1
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- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- YIVJZNGAASQVEM-UHFFFAOYSA-N Lauroyl peroxide Chemical compound CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC YIVJZNGAASQVEM-UHFFFAOYSA-N 0.000 description 1
- TXXHDPDFNKHHGW-CCAGOZQPSA-N Muconic acid Natural products OC(=O)\C=C/C=C\C(O)=O TXXHDPDFNKHHGW-CCAGOZQPSA-N 0.000 description 1
- HQABUPZFAYXKJW-UHFFFAOYSA-N N-butylamine Natural products CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920001214 Polysorbate 60 Polymers 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- QROGIFZRVHSFLM-QHHAFSJGSA-N [(e)-prop-1-enyl]benzene Chemical compound C\C=C\C1=CC=CC=C1 QROGIFZRVHSFLM-QHHAFSJGSA-N 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 125000005037 alkyl phenyl group Chemical group 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- WQAQPCDUOCURKW-UHFFFAOYSA-N butanethiol Chemical compound CCCCS WQAQPCDUOCURKW-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- BTQLDZMOTPTCGG-UHFFFAOYSA-N cyclopentyl prop-2-enoate Chemical compound C=CC(=O)OC1CCCC1 BTQLDZMOTPTCGG-UHFFFAOYSA-N 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- XDSGMUJLZDSCPA-UHFFFAOYSA-N diazanium;phenoxybenzene;sulfate Chemical class [NH4+].[NH4+].[O-]S([O-])(=O)=O.C=1C=CC=CC=1OC1=CC=CC=C1 XDSGMUJLZDSCPA-UHFFFAOYSA-N 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 229940105990 diglycerin Drugs 0.000 description 1
- GPLRAVKSCUXZTP-UHFFFAOYSA-N diglycerol Chemical compound OCC(O)COCC(O)CO GPLRAVKSCUXZTP-UHFFFAOYSA-N 0.000 description 1
- 229940043279 diisopropylamine Drugs 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- WEHWNAOGRSTTBQ-UHFFFAOYSA-N dipropylamine Chemical compound CCCNCCC WEHWNAOGRSTTBQ-UHFFFAOYSA-N 0.000 description 1
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229960002089 ferrous chloride Drugs 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- LDHQCZJRKDOVOX-IHWYPQMZSA-N isocrotonic acid Chemical compound C\C=C/C(O)=O LDHQCZJRKDOVOX-IHWYPQMZSA-N 0.000 description 1
- JJWLVOIRVHMVIS-UHFFFAOYSA-N isopropylamine Chemical compound CC(C)N JJWLVOIRVHMVIS-UHFFFAOYSA-N 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- GYNNXHKOJHMOHS-UHFFFAOYSA-N methyl-cycloheptane Natural products CC1CCCCCC1 GYNNXHKOJHMOHS-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 description 1
- WFKDPJRCBCBQNT-UHFFFAOYSA-N n,2-dimethylprop-2-enamide Chemical compound CNC(=O)C(C)=C WFKDPJRCBCBQNT-UHFFFAOYSA-N 0.000 description 1
- SEXOVMIIVBKGGM-UHFFFAOYSA-N naphthalene-1-thiol Chemical compound C1=CC=C2C(S)=CC=CC2=C1 SEXOVMIIVBKGGM-UHFFFAOYSA-N 0.000 description 1
- 229920006173 natural rubber latex Polymers 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000012875 nonionic emulsifier Substances 0.000 description 1
- HMZGPNHSPWNGEP-UHFFFAOYSA-N octadecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C(C)=C HMZGPNHSPWNGEP-UHFFFAOYSA-N 0.000 description 1
- KZCOBXFFBQJQHH-UHFFFAOYSA-N octane-1-thiol Chemical compound CCCCCCCCS KZCOBXFFBQJQHH-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 125000006353 oxyethylene group Chemical group 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 229940100684 pentylamine Drugs 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000012966 redox initiator Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 1
- 229960001755 resorcinol Drugs 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- GXDPEHGCHUDUFE-UHFFFAOYSA-N sulfanylmethanol Chemical compound OCS GXDPEHGCHUDUFE-UHFFFAOYSA-N 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- YBRBMKDOPFTVDT-UHFFFAOYSA-N tert-butylamine Chemical compound CC(C)(C)N YBRBMKDOPFTVDT-UHFFFAOYSA-N 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Landscapes
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Adhesives Or Adhesive Processes (AREA)
Description
製造例1
窒素ガス導入管、温度計、還流冷却器、滴下ロートおよび撹拌装置を備えた五つ口フラスコに、非反応性のアニオン系乳化剤(商品名「ハイテノールNF−08」、第一工業製薬(株)製)1.0部、水268部を仕込み、系内を均一な水溶液とした。次いで、窒素気流下、85℃まで昇温し、メタクリル酸20部、メタクリル酸ノルマルブチル80部および前記一般式(1)で表される化合物5部からなる溶液、ならびに過硫酸アンモニウム4部および水80部からなる水溶液を別々の滴下ロートから徐々に滴下し、3時間反応させた。更に過硫酸アンモニウム1部および水10部からなる水溶液を滴下して2時間反応させることにより、重合物(A’−1)の水溶液を得た。(A’−1)成分の酸価(AVa)は124.3mgKOH/g、ガラス転移温度は47℃、重量平均分子量は11000であった。
(A’−1)成分の水溶液を、バーコーターNo.20を用いてガラス板に塗布し、110℃で2時間乾燥させることによりフィルム状物を得た。また、(A−1)成分の水溶液についても同様にしてフィルム状物を得た。
市販の熱応力歪測定装置(TMA:セイコーインスツル(株)、製品名「TMA−120」)を用い、(A’−1)成分のフィルム状物に針入プローブを介して5gの荷重を加え、−100℃から一定速度(10℃/分)で装置内を昇温し、得られた変移曲線よりガラス転移温度(℃)を求めた。結果を表1に示す。
(A’−1)成分および(A−1)成分の各フィルム状物を用い、JIS K
2501に準拠した中和滴定法により酸価(AVa,AVb)をそれぞれ測定した。結果を表1に示す。
(A’−1)成分および(A−1)成分の各水溶液について、ゲルパーメーションクロマトグラフィー(東ソー(株)製、商品名「HLC−8320」、カラム:東ソー(株)製、商品名「TSKgelGMPWXL」、「TSKgelG2500PWXL」)を使用することにより、ポリエチレンオキシド換算値としての重量平均分子量をそれぞれ求めた。結果を表1に示す。
表1に示す種類、部数の原料を用いた他は製造例1と同様にして各重合体塩の水溶液を得た。また、各(α)成分は、製造例1におけるカルボキシル基の中和率と同一の中和率となる部数で使用した。また、前記同様の方法により、ガラス転移温度、酸価、および重量平均分子量を求めた。結果を表1に示す。
IA:イタコン酸
BMA:アクリル酸ノルマルブチル
MMA:メタクリル酸メチル
SMA:メタクリル酸ステアリル
St:スチレン
MST:α−メチルスチレン
AM:アクリルアミド
RN:ポリオキシエチレンフェニルエーテル系反応性乳化剤(商品名「アクアロンRN−10」、第一工業製薬(株)製)
MET:2−メルカプトエタノール
NH3:25%アンモニア水(沸点約−33.3℃)
TEA:トリエチルアミン(沸点約89.7℃)
EEA:ジエチルアミン(沸点約55.5℃)
DEA:ジエタノールアミン(沸点約217 °C)
DBA:ジブチルアミン(沸点約159 ℃)
EDA:エチレンジアミン(沸点約117℃)
Na:48%水酸化ナトリウム水溶液
K:48%水酸化カリウム水溶液
実施例1
市販の重合ロジン−ペンタエリスリトールエステル(商品名「ペンセルD−160」、荒川化学工業(株)製、軟化点160℃)100部を、100℃にてトルエン60部に溶解させた後、高分子乳化剤として(A−1)成分を固形分換算で3部、水を160部加え、75℃にて1時間程度撹拌し、予備乳化した。次いで、得られた予備乳化物を高圧乳化機(マントンガウリン社製)により30MPaの圧力下で高圧乳化した。次いで、得られた乳化物を200部、減圧蒸留装置に仕込み、50℃および13.3kPaの条件下で8時間、撹拌下に減圧蒸留し、不揮発分が50重量%の粘着付与剤樹脂のエマルジョンを得た。
高分子乳化剤として(A−1)成分〜(A−12)成分の溶液をそれぞれ使用した他は実施例1と同様にして、粘着付与剤樹脂のエマルジョン(いずれも不揮発分が50重量%)を得た。
粘着付与樹脂として市販のロジン−フェノール樹脂(商品名「タマノル803L」、荒川化学工業(株)製、軟化点150℃)を使用した他は実施例1と同様にして、粘着付与剤樹脂のエマルジョン(不揮発分が50重量%)を得た。
粘着付与樹脂として市販のロジン−ペンタエリスリトールエステル(商品名「ペンセルGA−100」、荒川化学工業(株)製、軟化点100℃)を使用した他は実施例1と同様にして、粘着付与剤樹脂のエマルジョン(不揮発分が50重量%)を得た。
粘着付与樹脂として市販の石油樹脂(商品名「日石ネオポリマーL−90」、JX日鉱日石エネルギー(株)製、軟化点95℃)を使用した他は実施例1と同様にして、粘着付与剤樹脂のエマルジョン(不揮発分が50重量%)を得た。
高分子乳化剤として(ア)成分〜(ソ)成分の溶液をそれぞれ使用した他は実施例1と同様にして、粘着付与剤樹脂のエマルジョン(いずれも不揮発分が50重量%)を得た。
実施例1において、(A−1)成分に代えてポリオキシエチレンスチレン化フェニルエーテル(商品名「ノイゲンEA−167」第一工業製薬(株)製)を5部使用した他は同様にして、不揮発分50%の粘着付与剤樹脂のエマルジョンを得た。
実施例1と同様の五つ口フラスコに、水86.80部およびアニオン性乳化剤(ポリオキシエチレンスチレン化フェニルエーテル硫酸アンモニウム塩、商品名「ハイテノールNF−08」、第一工業製薬(株)製)0.92部を仕込み、70℃に昇温して溶液となした。次いでアクリル酸ブチル90.20部、アクリル酸2.80部からなる溶液、および過硫酸カリウム0.48部、重曹0.22部および水17.66部からなる水溶液をそれぞれ別々の滴下ロートから3時間かけて滴下した。滴下終了後、70℃にて1時間ラジカル重合反応を実施した。次いで、得られたエマルジョンを室温まで冷却し、100メッシュ金網を用いてろ過し、固形分が45.7%のアクリル系重合体エマルジョンを得た。
前記アクリル系重合体エマルジョン80部と実施例1の粘着付与樹脂エマルジョン20部とをよく混合し、粘着剤組成物を得た。実施例2〜8および比較例1〜10の各粘着付与樹脂エマルジョンについても同様にして粘着剤組成物を得た。
実施例1に係る粘着剤組成物を厚さ38μmのPETフィルムに塗布した後、110℃の循風乾燥器内で5分間乾燥させ、70μm厚の粘着剤皮膜を供えた試験フィルムを得た。次いでこのフィルムを以下の試験に供した。実施例2〜15、比較例1〜16および参照例の各粘着剤組成物についても同様に評価した。
各試験フィルムを幅25mmに切り、被着体(ステンレス板(SS)およびポリエチレン板(PE))に2kgのローラーを1往復させて貼り合わせ、23℃水中に72時間浸漬した。水中から積層体を取り出した後、直ちに180度剥離テストを、引張速度300mm/分、測定温度23℃の条件で行い、粘着力(kg/25mm)を測定した。
各試験フィルムを適当な大きさに切り、23℃の水に72時間浸漬した後、粘着剤皮膜の白化程度を以下の基準で目視評価した。
3:変化無し(透明)
2:僅かに白濁
1:強く白濁
Claims (15)
- アニオン性単量体(a1)、(メタ)アクリル酸アルキルエステル系単量体(a2)および下記一般式(1)で表わされる化合物(a3)を反応させてなるガラス転移温度が−50〜110℃の重合体(A’)(但し、(A’)成分をなす単量体として(メタ)アクリルアミド系単量体及び反応性乳化剤を除く。)を下記一般式(2)で表わされる沸点−33.3〜110℃の含窒素化合物(α)で中和してなる重合体塩(A)の存在下で粘着付与樹脂(B)を乳化することにより得られる、粘着付与樹脂エマルジョン。
- 前記重合体(A’)が、更にスチレン類(a4)を反応成分とする請求項1の粘着付与樹脂エマルジョン。
- (a1)成分が(メタ)アクリル酸である、請求項1または2の粘着付与樹脂エマルジョン。
- (a2)成分のアルキル基の炭素数が1〜8である、請求項1〜3のいずれかの粘着付与樹脂エマルジョン。
- (a4)成分がスチレンである、請求項1〜4のいずれかの粘着付与樹脂エマルジョン。
- (a1)成分〜(a4)成分の使用量が順に18〜40重量%、45〜79.9重量%、0.1〜10重量%、および0〜30重量%である請求項1〜5のいずれかの粘着付与樹脂エマルジョン。
- (A’)成分の酸価が100〜400mgKOH/gである請求項1〜6のいずれかの粘着付与樹脂エマルジョン。
- (A’)成分の重量平均分子量が5000〜30000である請求項1〜7のいずれかの粘着付与樹脂エマルジョン。
- (B)成分の軟化点が120〜180℃である請求項1〜8のいずれかの粘着付与樹脂エマルジョン。
- (B)成分が重合ロジンエステルである、請求項1〜9のいずれかの粘着付与樹脂エマルジョン。
- (B)成分100重量部(固形分換算)に対する(A)成分の使用量が2〜10重量部(固形分換算)である、請求項1〜10のいずれかの粘着付与樹脂エマルジョン。
- 請求項1〜11のいずれかの粘着付与樹脂エマルジョンとベースポリマーエマルジョンとを含有するエマルジョン型粘着剤組成物。
- ベースポリマーエマルジョンが(メタ)アクリル系共重合体エマルジョンである請求項12のエマルジョン型粘着剤組成物。
- 請求項12または13のエマルジョン型粘着剤組成物を用いてなるフィルムラベル用粘着剤組成物。
- 被着体がポリオレフィン基材である請求項14のフィルムラベル用粘着剤組成物。
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