JP7194672B2 - 接着力および耐久性に優れた光学フィルム、およびこれを含む偏光板 - Google Patents
接着力および耐久性に優れた光学フィルム、およびこれを含む偏光板 Download PDFInfo
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Description
[化学式1]
[化学式2]
[化学式3]
[化学式5]
[化学式6]
[化学式7]
[化学式8]
-ethyl ester)、オキシ-フェニル-酢酸-2-[2-ヒドロキシ-エトキシ]-エチルエステル(oxy-phenylacetic acid-2-[2-hydroxy-ethoxy]-ethyl ester)、アルファ-ジメトキシ-アルファ-フェニルアセトフェノン(alpha-dimethoxy-alphaphenylacetophenone)、2-ベンジル-2-(ジメチルアミノ)1-[4-(4-モルホリニル)フェニル]-1-ブタノン(2-Benzyl-2-(dimethylamino)-1-[4-(4-morpholinyl)phenyl]-1-butanone)、2-メチル-1-[4-(メチルチオ)フェニル]-2-(4-モルホリニル)-1-プロパノン(2-Methyl-1-[4-(methylthio)phenyl]-2-(4-morpholinyl)-1-propanone)、ジフェニル(2,4,6-トリメチルベンゾイル)-ホスフィンオキシド(Diphenyl(2,4,6-trimethylbenzoyl)-phosphine oxide)、フェニルビス(2,4,6-トリメチルベンゾイル)ホスフィンオキシド(phenyl bis(2,4,6-trimethyl benzoyl)phosphine oxide)からなるグループより選択される1つ以上であってもよい。
500mlの丸底フラスコを窒素に置換し、エチレングリコール、ジエチレングリコール、ソジウムスルホニルイソフタル酸、イソフタル酸を0.5:0.5:0.1:0.9のモル比で投入し、200℃で2時間エステル化反応を進行させて理論量の水を流出させた。
ポリエステル樹脂Aにグリシジルエチル(メタ)アクリレート、メチル(メタ)アクリレートを40:60の重量比で投入し、冷却後に水に高速撹拌させ、反応物と熱開始剤を投入し、温度を80℃に上昇させて、2時間ポリエステルアクリル樹脂Bを製造した。ポリエステルとアクリルとの重量比は5:5である。樹脂から水を除いた全固形分は30%であり、ガラス転移温度は60℃、最低造膜温度は80℃である。
500mlの丸底フラスコを窒素に置換し、エチレングリコール、ソジウムスルホニルイソフタル酸、イソフタル酸を1.0:0.1:0.9のモル比で投入し、200℃で2時間エステル化反応を進行させて理論量の水を流出させた。
ポリカーボネートジオール(Asahi Kasei、分子量2000)48gにメチルエチルケトン60gを添加した後、十分に撹拌させて溶解させ、これにイソホロンジイソシアネート(isophoron diisocyanate)40gを添加した後、75℃で1時間反応させた。反応終了後、60℃まで冷却し、ジメチロールプロピオン酸12gを添加し、75℃で反応させてプレポリマー溶液を得た。その後、このプレポリマー溶液を40℃まで冷却し、水233gを加えてホモミキサーで高速撹拌して乳化を行った後、トリエチルアミンで中和し、イソホロンジアミンで鎖延長し、この乳化液を加熱減圧してメチルエチルケトンを除去し、水性ポリウレタン樹脂D溶液を得た。樹脂から水を除いた全固形分は30%であり、ガラス転移温度は30℃、最低造膜温度は0℃である。
500mlの丸底フラスコを窒素に置換し、エチレングリコール、2-メチル-1,3-プロパンジオール、アジピン酸、イソフタル酸を0.5:0.5:0.5:0.5のモル比で投入し、200℃で2時間エステル化反応を進行させて理論量の水を流出させた。
メタクリレート重合体を主成分とするアクリル樹脂を有し、250℃、250rpmの条件下でT-ダイ製膜機を用いてフィルムを製膜した後、135℃でMD方向に1.8倍延伸したフィルムを製造し、コーティング前のフィルムの一面に50W/m2/minの条件でコロナ処理を施した。
実施例および比較例で製造されたフィルムを用いてTAC/PVA素子/製造フィルムの順に積層し、各フィルムの間に4%PVA水系接着剤を塗布した後、最終接着層の厚さが1~2μmとなるように条件を設定して、ラミネータを通過させた。
実施例および比較例で製造された組成物により製造したフィルムを用いて一般のアクリル系光学フィルム/PVA素子/製造フィルムの順に積層し、各フィルムの間に紫外線硬化型接着剤を塗布した後、最終接着層の厚さが1~2μmとなるように条件を設定して、ラミネータを通過させた。その後、紫外線照射装置を用いて、一般のアクリル系光学フィルムが積層された面に紫外線を照射して偏光板を製造した。製造した偏光板を裁断して幅2cmの試験片を製造して、TA.XT.Plus(Stable Micro Systems)texture analyserを用いて速度300mm/min、90゜で剥離時の剥離力を測定した。
実験例2で製造した偏光板をガラス基板にラミネーション(glass lamination)し、これを温度80℃、湿度90%で500時間放置することを行った。その後、偏光板の外観に変形の有無を肉眼で評価した。偏光板の外観が良好な場合にOK、端に完全に隙間ができたり浮き上がりが発生したりする場合をNGと評価した。
Claims (7)
- 透明フィルムと、
前記透明フィルムの少なくとも一面にコーティング層とを含み、
前記コーティング層は、ガラス転移温度が60~65℃であり且つポリエステルとアクリルを重量比5:5で含むポリエステルアクリル樹脂、および、ガラス転移温度が25~40℃であり且つ重量平均分子量が1万~100万であるポリウレタン系樹脂を含み、
前記ポリエステルアクリル樹脂はさらに追加的成分を含み、前記追加的成分は、グリシジルエチル(メタ)アクリレートまたはメチル(メタ)アクリレートのうちの少なくとも1つであり、
前記ポリエステルアクリル樹脂および前記ポリウレタン系樹脂の最低造膜温度は、それぞれ80~90℃および0~10℃である、
光学フィルム。 - 前記ポリエステルアクリル樹脂の最低造膜温度が80℃であり、前記ポリウレタン系樹脂の最低造膜温度が0~5℃であり、これらの最低造膜温度の差は、75~80℃である、請求項1に記載の光学フィルム。
- 前記ポリエステル系樹脂は、下記化学式1で表される繰り返し単位を含む、請求項1または2に記載の光学フィルム:
[化学式1]
R1およびR2は、互いに同一または異なり、それぞれ独立に、置換もしくは非置換のC1~20アルキル基、置換もしくは非置換のC6~20アリール基、または置換もしくは非置換のC5~20シクロアルキル基であり、
R3およびR4は、互いに同一または異なり、少なくとも1つは、カルボキシ基、ヒドロキシ基、またはスルホン酸塩基であり、それぞれ独立に、水素、カルボキシ基、ヒドロキシ基、スルホン酸塩基、置換もしくは非置換のC1~20アルキル基、置換もしくは非置換のC6~20アリール基、または置換もしくは非置換のC5~20シクロアルキル基である。 - 前記ポリウレタン系樹脂は、カルボキシ基、ヒドロキシ基、スルホン酸塩基、および3級アミン基からなる群より選択された1種以上の官能基を含む、請求項1から3のいずれか一項に記載の光学フィルム。
- 前記コーティング層の厚さは、50~1000nmである、請求項1から4のいずれか一項に記載の光学フィルム。
- 前記透明フィルムは、アクリル系フィルムである、請求項1から5のいずれか一項に記載の光学フィルム。
- 偏光子と、
前記偏光子の少なくとも一面に請求項1から6のいずれか一項に記載の光学フィルムとを含む、偏光板。
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KR10-2016-0104480 | 2016-08-17 | ||
KR1020160104480A KR102056513B1 (ko) | 2016-08-17 | 2016-08-17 | 접착력 및 내구성이 우수한 광학 필름, 및 이를 포함하는 편광판 |
PCT/KR2017/008963 WO2018034512A1 (ko) | 2016-08-17 | 2017-08-17 | 접착력 및 내구성이 우수한 광학 필름, 및 이를 포함하는 편광판 |
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KR101960477B1 (ko) | 2016-09-20 | 2019-03-20 | 주식회사 엘지화학 | 슬립성 및 자외선 차단 기능이 우수한 광학 필름, 및 이를 포함하는 편광판 |
JP7075545B2 (ja) * | 2019-09-30 | 2022-05-25 | 大日本塗料株式会社 | 2液型塗料組成物及び塗装物 |
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WO2018034512A1 (ko) | 2018-02-22 |
US11668859B2 (en) | 2023-06-06 |
US20190179058A1 (en) | 2019-06-13 |
JP2019531498A (ja) | 2019-10-31 |
KR102056513B1 (ko) | 2019-12-16 |
CN109564321A (zh) | 2019-04-02 |
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