JP2016539212A - 粘着剤組成物 - Google Patents
粘着剤組成物 Download PDFInfo
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- JP2016539212A JP2016539212A JP2016524518A JP2016524518A JP2016539212A JP 2016539212 A JP2016539212 A JP 2016539212A JP 2016524518 A JP2016524518 A JP 2016524518A JP 2016524518 A JP2016524518 A JP 2016524518A JP 2016539212 A JP2016539212 A JP 2016539212A
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- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
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- WYOXPIKARMAQFM-UHFFFAOYSA-N n,n,n',n'-tetrakis(oxiran-2-ylmethyl)ethane-1,2-diamine Chemical compound C1OC1CN(CC1OC1)CCN(CC1OC1)CC1CO1 WYOXPIKARMAQFM-UHFFFAOYSA-N 0.000 description 1
- QYZFTMMPKCOTAN-UHFFFAOYSA-N n-[2-(2-hydroxyethylamino)ethyl]-2-[[1-[2-(2-hydroxyethylamino)ethylamino]-2-methyl-1-oxopropan-2-yl]diazenyl]-2-methylpropanamide Chemical compound OCCNCCNC(=O)C(C)(C)N=NC(C)(C)C(=O)NCCNCCO QYZFTMMPKCOTAN-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003518 norbornenyl group Chemical group C12(C=CC(CC1)C2)* 0.000 description 1
- 238000000655 nuclear magnetic resonance spectrum Methods 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- UOMUPDCRXJLVGR-UHFFFAOYSA-N propane-1,2,2-triol Chemical compound CC(O)(O)CO UOMUPDCRXJLVGR-UHFFFAOYSA-N 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000000425 proton nuclear magnetic resonance spectrum Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 150000003498 tellurium compounds Chemical class 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- IUCJMVBFZDHPDX-UHFFFAOYSA-N tretamine Chemical compound C1CN1C1=NC(N2CC2)=NC(N2CC2)=N1 IUCJMVBFZDHPDX-UHFFFAOYSA-N 0.000 description 1
- 229950001353 tretamine Drugs 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- G02F1/133528—Polarisers
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- C08F293/00—Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule
- C08F293/005—Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule using free radical "living" or "controlled" polymerisation, e.g. using a complexing agent
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- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
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- C08G18/40—High-molecular-weight compounds
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- C08G18/622—Polymers of esters of alpha-beta ethylenically unsaturated carboxylic acids
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- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
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- C08G18/8022—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32 with compounds of C08G18/3203 with polyols having at least three hydroxy groups
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
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Abstract
Description
(R1)nSi(R2)(4−n)
(R3)nSi(R2)(4−n)
化学式1または2の化合物としては、例えばアセトアセチルプロピルトリメトキシシラン、アセトアセチルプロピルトリエトキシシラン、ベータ−シアノアセチルプロピルトリメトキシシランまたはベータ−シアノアセチルプロピルトリエトキシシランなどを例示することができるが、これに制限されるものではない。
数平均分子量(Mn)及び分子量分布(PDI)は、GPCを使用して以下の条件で測定し、検量線の製作には、Agilent systemの標準ポリスチレンを使用して測定結果を換算した。
測定器:Agilent GPC(Agilent 1200 series、U.S.)
カラム:PL Mixed B 2個連結
カラム温度:40℃
溶離液:THF(Tetrahydrofuran)
流速:1.0mL/min
濃度:〜1mg/mL(100μL injection)
実施例及び比較例で製造された粘着剤組成物をPET(poly(ethylene terephthalate))(MRF−38、三菱製)の離型処理面にコーティングする過程でのコーティング性は、コーティング層の状態を目視で観察し、下記基準によって評価した。
A:コーティング層に気泡及び縞柄などが目視によって確認されない
B:コーティング層に気泡及び/または縞柄などが目視で微細に観察される
C:コーティング層に気泡及び/または縞柄が目視で著しく観察される
界面密着力評価は、次の手順で評価した。
1)実施例及び比較例で製造された粘着剤がコーティングされた偏光板を7cm×12cm(横×縦)のサイズにカットする。
2)前記カットされた偏光板のうち粘着剤面に付着した離型フィルムを剥離し、剥離した面に粘着剤剥離を測定するためのテープを5cm×10cm(横×縦)サイズにラミネイションさせる。
3)ラミネイション状態を5分間維持させた後、前記ラミネイションされたテープを除去し、剥離された偏光板の粘着剤面に残留する粘着剤の量を目視で観察し、下記基準によって評価した。
A:残留する粘着剤の量が全体粘着剤の90%以上の場合
B:残留する粘着剤の量が全体粘着剤の50%以上〜90%未満の場合
C:残留する粘着剤の量が全体粘着剤の50%未満の場合
偏光板の曲がり特性は、下記の手順で測定した。
1)幅が40mm程度であり、長さが410mm程度であり、厚さが0.7mmであるSTNソーダライムガラス(soda lime glass)を準備した後、異物がないように溶媒エチルアセテートまたはイソプロピルアセテートを使用してきれいに洗浄した後、乾燥させる。
2)実施例及び比較例で製造したコーティング液(粘着剤組成物)を塗布した偏光板をMD(machine direction)方向を長くして、幅が35mm程度であり、長さが400mm程度であるサイズで試験片を準備する。
3)1)で用意したSTNソーダライムガラスの真中に2)で用意した試験片をラミネータを使用して付着し、サンプルを製造する。
4)25℃の耐熱条件で前記サンプルの一方を磁石で固定させた後、固定させた反対方向の曲がり程度を基準点から離れた距離(S0)として測定する。
5)初期曲がり程度を測定した後、60℃の耐熱条件で72時間を保管する。
6)その後、60℃の耐熱条件を維持したまま、チャンバ(chamber)内でサンプルの曲がり程度を4)のような方式、すなわち一方を磁石で固定させた後、固定させた反対方向の曲がり程度を基準点から離れた距離(S1)として測定する。
△W=S1−S0
評価基準
A:△W≦9mmの場合
B:△W≦11mmの場合
C:△W>11mmの場合
ブロック共重合体の各ブロックなどのガラス転移温度(Tg)は、下記数式によって算出した。
1/Tg=ΣWn/Tn
すなわち、前記数式で、右辺は、使用された単量体の重量分率を当該単量体が単独重合体を形成した場合に示すガラス転移温度で分けた数値(Wn/Tn)を単量体別にすべて計算した後、計算された数値を合算した結果である。
実施例及び比較例のブロック共重合体で第1ブロックを形成する主要単量体であるメチルメタクリレート(MMA)と第2ブロックを形成する主要単量体であるブチルアクリレート(BA)の重合過程での転換率及びブロック共重合体内での組成含量は、1H−NMRの結果によって以下の数式で算出した。
MMA転換率(%)=100×B/(A+B)
BA転換率(%)=100×C/(C+D)
ブロック共重合体の第1及び第2ブロックの比率は、第1ブロック及び第2ブロックを形成するのに使用した主要単量体であるメチルメタクリレート(MMA)及びブチルアクリレート(BA)の比率に基づいて下記数式に基づいて算定した。
ブロック共重合体内のMMAの含量(%)=100×MMAピーク面積/BAピーク面積
すなわち、第1及び第2ブロックの重量比は、MMA構造の−CH3ピークとBAから形成された重合体の−OCH2−ピークの相対値を計算して算定した。
EBiB(ethyl 2−bromoisobutyrate)0.1g及びメチルメタクリレート(MMA)14.2gをエチルアセテート(EAc)6.2gに混合した。前記混合物が収納されたフラスコをゴム膜で密封し、約25℃で約30分間窒素パージング及び撹拌を行い、バブリングを通じて溶存酸素を除去した。その後、CuBr2 0.002g、TPMA(tris(2−pyridylmethyl)amine)0.005g及びV−65(2、2’−azobis(2、4−dimethyl valeronitrile))0.017gを酸素が除去された前記混合物に投入し、約67℃の反応槽に浸して、反応を開始させた(第1ブロックの重合)。メチルメタクリレートの転換率が約75%程度である時点であらかじめ窒素でバブリングしておいたブチルアクリレート(BA)155g、ヒドロキシブチルアクリレート(HBA)0.8g及びエチルアセテート(EAc)250gの混合物を窒素の存在下で投入した。その後、反応フラスコにCuBr2 0.006g、TPMA 0.012g及びV−65 0.05gを入れ、鎖延長反応(chain extention reaction)を行った(第2ブロックの重合)。単量体(BA)の転換率が80%以上に到逹すれば、前記反応混合物を酸素に露出させ、適切な溶媒に希釈して反応を終決させることによって、ブロック共重合体(A1)を製造した(前記過程でV−65は、その半減期を考慮して反応終了時点まで適切に分割して投入した。).
第1ブロックの重合時に使用された原料及び添加剤などの種類を下記表1のように調節し、第2ブロックの重合時に使用された原料及び添加剤などの種類を下記表2のように調節したことを除いて、製造例1の場合と同一にブロック共重合体を製造した。
窒素ガスが還流され、温度調節が容易になるように冷却装置を設置した1L反応器にメチルメタクリレート(MMA)10重量部、n−ブチルアクリレート87.3重量部及び4−ヒドロキシブチルアクリレート2.7重量部を投入し、分子量調節剤としてn−ドデシルメルカプタンを200ppmの量で添加した後、溶剤としてエチルアセテート120重量部を投入した。次に、酸素除去のために窒素ガスを約60分間パージングし、温度を60℃に維持した状態で、反応開始剤であるAIBN(azobisisobutyronitrile)0.05重量部を投入し、約8時間反応させて、ランダム共重合体を製造した。製造されたランダム共重合体(B4)の数平均分子量(Mn)は、約132000であり、分子量分布(PDI)は、約4.6であった。
コーティング液(粘着剤組成物)の製造
製造例1で製造されたブロック共重合体(A1)100重量部に対して架橋剤(Coronate L、日本国NPU製)0.1重量部、エポキシ化合物(T−746L、Soken社製)0.05重量部、DBTDL(Dibutyltin dilaurate)0.1重量部及びβ−シアノアセチル基を有するシランカップリング剤0.2重量部を混合し、溶剤としてエチルアセテートを配合し、コーティング固形分が約25重量%となるように調節し、コーティング液(粘着剤組成物)を製造した。
製造されたコーティング液を乾燥後の厚さが約23μm程度となるように離型処理された厚さ38μmの離型PET(poly(ethylene terephthalate))(MRF−38、三菱製)の離型処理面にコーティングし、110℃のオーブンで約3分間維持した。乾燥後に片面にWV(Wide View)液晶層がコーティングされた偏光板(TAC/PVA/TACの積層構造:TAC=トリアセチルセルロース、PVA=ポリビニルアルコール系偏光フィルム)のWV液晶層に前記離型PET上に形成されたコーティング層をラミネートし、粘着偏光板を製造した。
粘着剤組成物(コーティング液)の製造時に各成分及び比率を下記表4のように調節したことを除いて、実施例1と同一に粘着剤組成物(コーティング液)及び粘着偏光板を製造した。
Claims (20)
- ガラス転移温度が50℃以上の第1ブロック及びガラス転移温度が−10℃以下であり、架橋性官能基を含む第2ブロックを有するブロック共重合体;及び
多官能性エポキシ化合物とアジリジン化合物よりなる群から選択された1種以上を含む粘着剤組成物。 - 第1ブロックは、メタクリル酸エステル単量体から誘導された重合単位を含む、請求項1に記載の粘着剤組成物。
- 架橋性官能基は、第1ブロックには含まれておらず、第2ブロックにのみ含まれている、請求項1に記載の粘着剤組成物。
- 架橋性官能基がヒドロキシ基またはカルボキシル基である、請求項1に記載の粘着剤組成物。
- 第2ブロックは、アルキル(メタ)アクリレートの重合単位90重量部〜99.9重量部及び架橋性官能基を有する共重合性単量体の重合単位0.1重量部〜10重量部を含む、請求項1に記載の粘着剤組成物。
- 第1ブロックは、数平均分子量が2,500〜100,000である、請求項1に記載の粘着剤組成物。
- 第1ブロックは、分子量分布が1.0〜2.0である、請求項1に記載の粘着剤組成物。
- ブロック共重合体は、数平均分子量が10,000〜300,000である、請求項1に記載の粘着剤組成物。
- ブロック共重合体は、分子量分布が1.0〜2.5である、請求項1に記載の粘着剤組成物。
- ブロック共重合体は、第1ブロック1重量部〜30重量部及び第2ブロック70重量部〜99重量部を含む、請求項1に記載の粘着剤組成物。
- ブロック共重合体は、第1ブロック及び第2ブロックよりなるジブロック共重合体である、請求項1に記載の粘着剤組成物。
- 多官能性エポキシ化合物及びアジリジン化合物よりなる群から選択された1種以上をブロック共重合体100重量部に対して0.001重量部〜10重量部で含む、請求項1に記載の粘着剤組成物。
- 多官能性イソシアネート化合物をさらに含む、請求項1に記載の粘着剤組成物。
- 光学フィルムと;前記光学フィルムの一面に形成され、架橋構造が具現された請求項1に記載の粘着剤組成物を含む粘着剤層と;を備える粘着型光学部材。
- 光学フィルムの表面には、カルボキシル基が存在し、粘着剤層が前記カルボキシル基が存在する表面に付着している、請求項14に記載の粘着型光学部材。
- 光学フィルムと粘着剤層との間にコロナ処理層が存在し、粘着剤層が前記コロナ処理層に付着している、請求項14に記載の粘着型光学部材。
- 偏光子と;前記偏光子の一面に形成され、架橋構造が具現された請求項1に記載の粘着剤組成物を含む粘着剤層と;を備える粘着型偏光板。
- 偏光子と粘着剤層との間には表面にカルボキシル基が存在する偏光子保護フィルムが存在し、粘着剤層は、前記カルボキシル基が存在する保護フィルムの表面に付着している、請求項17に記載の粘着型偏光板。
- 偏光子と粘着剤層との間には表面にコロナ処理層がある偏光子保護フィルムが存在し、粘着剤層は、前記コロナ処理層に付着している、請求項17に記載の粘着型偏光板。
- 請求項14に記載の粘着型光学部材または請求項17に記載の偏光板を含むディスプレイ装置。
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