JP5021204B2 - 感圧接着剤用の光開始剤及びuv架橋性アクリルポリマー - Google Patents
感圧接着剤用の光開始剤及びuv架橋性アクリルポリマー Download PDFInfo
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- JP5021204B2 JP5021204B2 JP2005369991A JP2005369991A JP5021204B2 JP 5021204 B2 JP5021204 B2 JP 5021204B2 JP 2005369991 A JP2005369991 A JP 2005369991A JP 2005369991 A JP2005369991 A JP 2005369991A JP 5021204 B2 JP5021204 B2 JP 5021204B2
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- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000005815 base catalysis Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229960002130 benzoin Drugs 0.000 description 1
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 1
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 1
- 230000001588 bifunctional effect Effects 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 150000001728 carbonyl compounds Chemical class 0.000 description 1
- 150000001244 carboxylic acid anhydrides Chemical group 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000007810 chemical reaction solvent Substances 0.000 description 1
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Substances ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- BMFYCFSWWDXEPB-UHFFFAOYSA-N cyclohexyl(phenyl)methanone Chemical compound C=1C=CC=CC=1C(=O)C1CCCCC1 BMFYCFSWWDXEPB-UHFFFAOYSA-N 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- JVSWJIKNEAIKJW-UHFFFAOYSA-N dimethyl-hexane Natural products CCCCCC(C)C JVSWJIKNEAIKJW-UHFFFAOYSA-N 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000001227 electron beam curing Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- ZWEDFBKLJILTMC-UHFFFAOYSA-N ethyl 4,4,4-trifluoro-3-hydroxybutanoate Chemical compound CCOC(=O)CC(O)C(F)(F)F ZWEDFBKLJILTMC-UHFFFAOYSA-N 0.000 description 1
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical class OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 150000008376 fluorenones Chemical class 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 235000019382 gum benzoic Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- JPXGPRBLTIYFQG-UHFFFAOYSA-N heptan-4-yl acetate Chemical compound CCCC(CCC)OC(C)=O JPXGPRBLTIYFQG-UHFFFAOYSA-N 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- LNMQRPPRQDGUDR-UHFFFAOYSA-N hexyl prop-2-enoate Chemical compound CCCCCCOC(=O)C=C LNMQRPPRQDGUDR-UHFFFAOYSA-N 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000006115 industrial coating Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 150000007527 lewis bases Chemical class 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004949 mass spectrometry Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010128 melt processing Methods 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- DCUFMVPCXCSVNP-UHFFFAOYSA-N methacrylic anhydride Chemical compound CC(=C)C(=O)OC(=O)C(C)=C DCUFMVPCXCSVNP-UHFFFAOYSA-N 0.000 description 1
- 239000011325 microbead Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- YKYONYBAUNKHLG-UHFFFAOYSA-N n-Propyl acetate Natural products CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 description 1
- ZQXSMRAEXCEDJD-UHFFFAOYSA-N n-ethenylformamide Chemical compound C=CNC=O ZQXSMRAEXCEDJD-UHFFFAOYSA-N 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- MDYPDLBFDATSCF-UHFFFAOYSA-N nonyl prop-2-enoate Chemical class CCCCCCCCCOC(=O)C=C MDYPDLBFDATSCF-UHFFFAOYSA-N 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- ANISOHQJBAQUQP-UHFFFAOYSA-N octyl prop-2-enoate Chemical compound CCCCCCCCOC(=O)C=C ANISOHQJBAQUQP-UHFFFAOYSA-N 0.000 description 1
- 239000003791 organic solvent mixture Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- ULDDEWDFUNBUCM-UHFFFAOYSA-N pentyl prop-2-enoate Chemical compound CCCCCOC(=O)C=C ULDDEWDFUNBUCM-UHFFFAOYSA-N 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 125000005498 phthalate group Chemical class 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- FBCQUCJYYPMKRO-UHFFFAOYSA-N prop-2-enyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC=C FBCQUCJYYPMKRO-UHFFFAOYSA-N 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 150000003505 terpenes Chemical class 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000013271 transdermal drug delivery Methods 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- SRPWOOOHEPICQU-UHFFFAOYSA-N trimellitic anhydride Chemical compound OC(=O)C1=CC=C2C(=O)OC(=O)C2=C1 SRPWOOOHEPICQU-UHFFFAOYSA-N 0.000 description 1
- 238000007039 two-step reaction Methods 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 239000010698 whale oil Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
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- C07C271/06—Esters of carbamic acids
- C07C271/08—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms
- C07C271/10—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms
- C07C271/12—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals
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- C07C235/70—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups and doubly-bound oxygen atoms bound to the same carbon skeleton
- C07C235/72—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups and doubly-bound oxygen atoms bound to the same carbon skeleton with the carbon atoms of the carboxamide groups bound to acyclic carbon atoms
- C07C235/76—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups and doubly-bound oxygen atoms bound to the same carbon skeleton with the carbon atoms of the carboxamide groups bound to acyclic carbon atoms of an unsaturated carbon skeleton
- C07C235/78—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups and doubly-bound oxygen atoms bound to the same carbon skeleton with the carbon atoms of the carboxamide groups bound to acyclic carbon atoms of an unsaturated carbon skeleton the carbon skeleton containing rings
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- C07C275/04—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms
- C07C275/20—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms of an unsaturated carbon skeleton
- C07C275/24—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms of an unsaturated carbon skeleton containing six-membered aromatic rings
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- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/0834—Compounds having one or more O-Si linkage
- C07F7/0838—Compounds with one or more Si-O-Si sequences
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- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
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- C07F7/10—Compounds having one or more C—Si linkages containing nitrogen having a Si-N linkage
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1808—C8-(meth)acrylate, e.g. isooctyl (meth)acrylate or 2-ethylhexyl (meth)acrylate
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- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/062—Copolymers with monomers not covered by C09J133/06
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- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/08—Homopolymers or copolymers of acrylic acid esters
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- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/10—Homopolymers or copolymers of methacrylic acid esters
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- C09J133/04—Homopolymers or copolymers of esters
- C09J133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
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- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
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Description
Zは、S、O、CH2又はNHであり、
R1〜8は、独立してH、Cl、Br、I、F、C1〜24アルコキシ、C1〜24アルキル又はアリールであり、しかもR1〜8の少なくとも一つは−W−X−Y基を含まねばならず、
Wは、C1〜12アルキレン又はC1〜12オキシアルキレンであり、
Xは、カーボネート、ウレタン、尿素、テトラメチルジシロキサン又はそれらの組合せであり、そして
Yは、−R9−C(R10)=CH2である(ここで、R9は線状若しくは分枝状のC2〜10アルキレン若しくはC2〜10オキシアルキレン又はアリーレンあるいはそれらの誘導体であり、そしてR10はH又はCH3である)〕
を有する光開始剤に向けられる。
本発明は、当該技術に、ポリマー鎖に結合された光開始剤を含むアクリルポリマーを提供する。重合性光開始剤は、C=C二重結合及び芳香族ケトンのUV反応性発色団の両方を含有する。光開始剤は、エチレンオキシド及びウレタン、尿素、カーボネート又はシロキサン官能基の両方を含有するスペーサーを含む。エチレンオキシドは直接的に発色団(たとえばベンゾフェノン)部分に結合され、一方ウレタン、尿素、カーボネート又はシロキサンは重合性部分たとえばアクリル又はスチレンC=C二重結合に密接に連結される。
Zは、S、O、CH2又はNHであり、
R1〜8は、独立してH、Cl、Br、I、F、C1〜24アルコキシ、C1〜24アルキル又はアリールであり、しかもR1〜8の少なくとも一つは−W−X−Y基を含まねばならず、
Wは、C1〜12アルキレン又はC1〜12オキシアルキレンであり、
Xは、カーボネート、ウレタン、尿素、テトラメチルジシロキサン又はそれらの組合せであり、そして
Yは、−R9−C(R10)=CH2である(ここで、R9は線状若しくは分枝状のC2〜10アルキレン若しくはC2〜10オキシアルキレン又はアリーレンあるいはそれらの誘導体であり、そしてR10はH又はCH3である)〕
の化合物を包含する。
ホットメルト感圧接着剤又はニートコポリマーを基材に適用しそしてそれをUV線下で硬化するべき手順は、次のとおりであった。接着剤を適用するために、2本の加熱可能なロールを備えた実験室コーターを用いた。接着剤を150℃に加熱し、そして2ミル厚のシリコーンでコーティングされたPET剥離ライナー上にコーティングした。次いで、ライナー上の接着剤をHバルブ(Fusion Systems)下で、UV−A585mJ/cm2及びUV−B512mJ/cm2の線量でもって、毎分35フィート(10.7m)のライン速度にて照射した。次いで、このフィルムをポリエチレンテレフタレート基材(Mylar(登録商標),DuPont)に貼り合わせそして転写し、そして23℃及び50%相対湿度にて状態調整した。別段指摘されていなければ、接着フィルムの厚さは3.5ミルであった。
パーセントゲルフラクションを、架橋レベル及び光開始剤効力の指標として用いた。UV照射アクリルポリマー(又は配合された接着剤)の試料をシリコーン剥離ライナーから分離し、そして最寄りの0.1mgまで秤量した。次いで、この試料をガラスジャー中に入れ、そしてトルエン中に24〜48時間浸した。トルエン抽出の前後の試料質量の差により、トルエンに不溶であるコポリマーの質量分率の百分率としてゲルフラクションが与えられた。試料が配合された接着剤である場合、いかなるトルエン可溶成分の質量も、初期重量から差し引かれる必要がある。
次のように修正されたPSTC−107の手順Aに従って、剪断接着力を測定した。アクリルポリマーのすべての試験試料を、上記の手順に従ってUV照射した。試験パネルを15分完全に濡らした後に適用された12×25mmの面積における1kgの剪断負荷下で、剪断接着力を測定した。すべての試験を、23℃及び50%相対湿度にて遂行した。
次のように修正されたPSTC−101の試験方法Aに従って、基材と被着体の間の180°試験における剥離接着力を測定した。アクリルポリマーのすべての試験試料を、上記の手順に従ってUV照射した。ステンレス鋼パネルを15分完全に濡らした後、剥離強さを測定した。
次のように修正されたPSTC−16の試験方法Bに従って、ループタックを測定した。この測定のために、ループタック試験機を用いた。アクリルポリマーのすべての試験試料を、上記の手順に従ってUV照射した。接着剤を2ミルPETフィルム支持体上にコーティングし、そして試験片ストリップのサイズは125mm×24mmであった。
アクリルポリマーのすべての試験試料を、上記の手順に従ってUV照射した。25×25mmの貼合わせ試験片を120°F(49℃)におけるオーブン中に1kgの剪断負荷下にて(該負荷を適用する前に室温にて15分完全に濡らした)置くことにより、SAFT測定を遂行した。オーブン温度を1分ごとに1°Fの増分にて上げ、そして接着層が破壊した温度を記録した。接着層が破壊しなかった場合、試験は375°F(191℃)にて自動的に終了した(その時点において、オーブンは冷え始まる)。
クロロホルム(無水,60mL)中の4−(2−ヒドロキシエトキシ)ベンゾフェノン(5.0g、0.02mol)の溶液を、N2下で室温にて撹拌した。引き続いて、3−イソプロペニル−α,α−ジメチルベンジルイソシアネート(m−TMI(登録商標))(4.2g、0.02mol)及びジブチルスズジラウレート(0.04g、0.06mmol)を添加した。反応過程をFTIRにより監視し、そしてイソシアネートピーク(約2260cm-1)が消失した時に完了した。次いで、溶媒を室温にて真空下で除去し、そして生成物を薄黄色液体として定量収率でもって得た。この化合物の同定は、1H−NMRにより、次の構造(IIA)を有すると確認された。
トルエン(無水,50mL)中の1−[3−(4−ベンゾイルフェノキシ)プロピル]−1,1,3,3−テトラメチルジシロキサン(5.0g、0.013mol)及びアリルメタクリレート(1.7g、0.013mol)の溶液を、室温にて撹拌した。環状メチルビニルシロキサンにおける白金−シクロビニルメチルシロキサン錯体(15mg)を添加し、そしてこの反応混合物を約24時間連続的に撹拌した。SiHピーク(約2119cm-1)の消失まで、反応過程をFTIRにより監視した。次いで、溶媒を室温にて真空下で除去し、そして生成物を薄黄色液体として定量収率でもって得た。この化合物の同定は、1H−NMRにより、次の構造(IV)を有すると確認された。
クロロホルム(無水,60mL)中の4−(2−ヒドロキシエトキシ)ベンゾフェノン(5.0g、0.02mol)の溶液を、N2下で室温にて撹拌した。引き続いて、2−イソシアナトエチルメタクリレート(MOI)(3.2g、0.02mol)及びトリエチルアミン(0.5g、5.0mmol)を添加した。反応過程をFTIRにより監視し、そしてイソシアネートピーク(約2260cm-1)が消失した時に完了した。次いで、溶媒を室温にて真空下で除去し、そして生成物を薄黄色液体として定量収率でもって得た。この化合物の同定は、1H−NMRにより、次の構造(V)を有すると確認された。
トルエン(100mL)中の4,4′−メチレンビス(フェニルイソシアネート)(MDI)(5.1g、0.02mol)の溶液を、N2下で室温にて撹拌した。引き続いて、ヒドロキシプロピルメタクリレート(2.9g、0.02mol)及びトリエチルアミン(1.0g、9.9mmol)を添加した。白色沈殿物が、12時間にわたってゆっくり形成した。THF(無水,50mL)を添加し、しかしてこの溶液は清澄且つ無色になった。4−(2−ヒドロキシエトキシ)ベンゾフェノン(5.0g、0.02mol)を添加し、そしてこの混合物を更に12時間撹拌した。濾過によるすべての不溶性副生成物の除去後、この溶液を室温にて真空下で濃縮し(約20mL)、そして少量のヘキサンを添加した(約10mL)。室温における一晩の放置後、この溶液からオフホワイト色結晶質固体を得た。この化合物の同定は、1H−NMRにより、次の構造(VI)を有すると確認された。
トルエン(無水,150mL)及びトリエチルアミン中の4,4′−メチレンビス(フェニルイソシアネート)(MDI)(10g、0.04mol)の溶液を、N2下で室温にて撹拌した。ヒドロキシプロピルメタクリレート(5.8g、0.04mol)を、ゆっくり添加した。白色沈殿物が、12時間にわたってゆっくり形成した。THF(無水,50mL)を添加し、しかしてこの溶液は清澄且つ無色になった。4−ヒドロキシベンゾフェノン(7.9g、0.04mol)を添加し、そしてこの混合物を更に12時間撹拌した。濾過によるすべての不溶性副生成物の除去後、溶媒を除去し、そしてこの固体をメタノールで抽出した。得られたメタノール溶液を室温にて真空下で乾燥して、粗生成物を得た。トルエン/ヘキサン(1:2)中における再結晶により、オフホワイト色結晶質固体を得た。この化合物の同定は、1H−NMRにより、次の構造(VII)を有すると確認された。
クロロホルム(無水,60mL)中の4−ベンゾフェノン(10.0g、0.05mol)の溶液を、N2下で室温にて撹拌した。引き続いて、2−イソシアナトエチルメタクリレート(MOI)(8.0g、0.05mol)及びトリエチルアミン(1.0g、10.0mmol)を添加した。イソシアネートピーク(約2260cm-1)の消失まで、反応過程をFTIRにより監視した。次いで、溶媒を室温にて真空下で除去し、そして生成物を薄黄色液体として定量収率でもって得た。この化合物の同定は、1H−NMRにより、次の構造(VIII)を有すると確認された。
メチレンクロライド(100mL)中の4−(2−ヒドロキシエトキシ)ベンゾフェノン(2.0g、8.3mmol)、メタクリル酸無水物(2.5g、16.2mmol)及び4−(ジメチルアミノ)ピリジン(DMAP)(0.2g、1.6mmol)の溶液を、N2下で室温にて12時間撹拌した。この反応混合物を、水酸化ナトリウムの水溶液で2回そして蒸留水で2回洗浄した。溶媒を蒸留により30℃にて除去した。次いで、反応溶媒を室温にて真空下で除去し、そして生成物を粘稠な薄黄色液体として得た。この化合物の同定は、1H−NMRにより、次の構造(IX)を有すると確認された。
異なる重合性光開始剤を含有するいくつかのアクリルポリマーを、溶液重合により製造した。各コポリマーは、アクリルモノマーの混合物、すなわち70pphm(重量により100部のモノマー当たりの部数)のエチルヘキシルアクリレート(2−EHA)、20pphmのメチルアクリレート(MA)、10pphmの1−ビニル−2−ピロリジノン(NVP)及び0.8ppmの重合性光開始剤を含んでいた。試薬及び手順は、次のとおりであった(表1)。
この例は、実施例8において製造されたコポリマーについてのゲル分率及び剪断強さの結果を記載する。上記に記載された手順に従って、試料を試験した。それらの結果は、表3に与えられている。すべてのアクリルポリマーが、妥当なゲル分率及び剪断接着力を示した。ポリマーAが、最高の架橋効率及び剪断接着力を有していた。ポリマーA203及びA258は、BASF Aktiengesellschaftから商業的に入手できる2種のUV硬化性アクリルポリマーであった。
この例は、実施例8において製造されたアクリルポリマーのいくつかの粘度、剥離接着力及びループタックを記載する。上記に記載された手順に従って、試料を試験した。それらの結果は、表4に示されている。ポリマーはすべて、匹敵し得る剥離接着力及びループタックを実証している。
この例は、実施例8において製造されたアクリルポリマーのいくつかのSAFTを記載する。上記に記載された手順に従って、試料を試験した。それらの結果は、表5に与えられている。ポリマーAは非常に高いSAFTを有しており、そしてそのポリマー試験片はこの試験方法の最高温度において破壊しなかった。
この例は、実施例8において製造されたアクリルポリマーの熱安定性を記載する。この調査のために、試験試料は、UV照射されなかった。ポリマー試料を150℃にて24時間加熱した。ブルックフィールドを用いて加熱前後の試料の粘度変化を測定し、そしてコポリマーの熱安定性についての判定基準として用いた。試験結果は、表6に一覧表にされている。ポリマーE及びFを除いてほとんどのポリマーが、150℃未満における24時間の良好な熱安定性を示した。
Claims (20)
- 構造式
Zは、S、O、CH2又はNHであり、
R1〜8は、独立してH、Cl、Br、I、F、C1〜24アルコキシ、C1〜24アルキル又はアリールであり、しかもR1〜8の少なくとも一つは−W−X−Y基を含まねばならず、
Wは、C1〜12アルキレン又はC1〜12オキシアルキレンであり、
Xは、カーボネート、ウレタン、尿素、テトラメチルジシロキサン又はそれらの組合せであり、そして
Yは、−R9−C(R 10 )=CH2である(ここで、R9は線状若しくは分枝状のC2〜10アルキレン若しくはC2〜10オキシアルキレン又はアリーレンあるいはそれらの誘導体であり、そしてR10はH又はCH3である)〕
を有する光開始剤。 - n=1である、請求項2に記載の光開始剤。
- n=1である、請求項4に記載の光開始剤。
- UV硬化性アクリルポリマーであって、次のモノマー成分
(a)70〜95重量部の式CH2=CH(R1)(COOR2)(ここで、R1はH又はCH3であり、そしてR2はC1〜20アルキル鎖である)のアクリル又はメタクリル酸誘導体、
(b)0〜30重量部の式CH2=CH(R1)(COOR2)(ここで、R1はH又はCH3であり、そしてR2はヒドロキシル官能性C1〜20アルキル鎖である)のアクリル又はメタクリル酸誘導体、
(c)0〜20重量部の、カルボキシ又は無水物官能基を含有するアクリル又はビニル化合物、
(d)0〜30重量部の、アミン、アミド、ウレタン、エポキシド又はイソシアネート官能基を含有するアクリル又はビニル化合物、及び
(e)0.01〜15重量部の、構造式
Zは、S、O、CH2又はNHであり、
R1〜8は、独立してH、Cl、Br、I、F、C1〜24アルコキシ、C1〜24アルキル又はアリールであり、しかもR1〜8の少なくとも一つは−W−X−Y基を含まねばならず、
Wは、C1〜12アルキレン又はC1〜12オキシアルキレンであり、
Xは、カーボネート、ウレタン、尿素、テトラメチルジシロキサン又はそれらの組合せであり、そして
Yは、−R9−C(R10)=CH2である(ここで、R9は線状若しくは分枝状のC2〜10アルキレン若しくはC2〜10オキシアルキレン又はアリーレンあるいはそれらの誘導体であり、そしてR10はH又はCH3である)〕
を有する光開始剤
を含むアクリルポリマー。 - 0.1〜5重量部の成分(e)を含む、請求項7に記載のアクリルポリマー。
- 成分(a)が、メチルアクリレート、メチルメタクリレート、n−ブチルアクリレート、2−エチルヘキシルアクリレート又は/及びイソオクチルアクリレートである、請求項7に記載のアクリルポリマー。
- 成分(b)を含み、そして成分(b)がヒドロキシエチルアクリレート又はヒドロキシプロピルアクリレートである、請求項7に記載のアクリルポリマー。
- 成分(c)を含み、そして成分(c)がアクリル酸又はマレイン酸無水物である、請求項7に記載のアクリルポリマー。
- UV硬化性ホットメルト感圧接着剤であって、請求項7に記載のアクリルポリマーを含む接着剤。
- アクリルポリマーが
(a)70〜95重量部のメチルアクリレート、メチルメタクリレート、n−ブチルアクリレート、2−エチルヘキシルアクリレート及び/又はイソオクチルアクリレート、
(b)0〜30重量部のヒドロキシエチルアクリレート及び/又はヒドロキシプロピルアクリレート、
(c)0〜20重量部のアクリル酸又はマレイン酸無水物、
(d)0〜30重量部の1−ビニル−2−ピロリジノン(NVP)、2−(tert−ブチルアミノ)エチルメタクリレート(t−BAEM)、アクリルアミド、グリシジルメタクリレート、3−イソプロペニル−α,α−ジメチルベンジルイソシアネート、又は次の式
(e)0.01〜15重量部の、
から成る群から選択された光開始剤
を含む、請求項16に記載の接着剤。
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TWI372765B (en) | 2012-09-21 |
US7745505B2 (en) | 2010-06-29 |
KR101245781B1 (ko) | 2013-03-20 |
KR20060076218A (ko) | 2006-07-04 |
EP1676870A1 (en) | 2006-07-05 |
JP2006188687A (ja) | 2006-07-20 |
US20060142408A1 (en) | 2006-06-29 |
TW200640955A (en) | 2006-12-01 |
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