JP5684701B2 - 分枝鎖又は環状のc4〜c10アルキル単位を有する複屈折ナフタレートコポリエステルを含む光学フィルム - Google Patents
分枝鎖又は環状のc4〜c10アルキル単位を有する複屈折ナフタレートコポリエステルを含む光学フィルム Download PDFInfo
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- B32B2307/418—Refractive
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- B32B2307/42—Polarizing, birefringent, filtering
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- B32B2457/202—LCD, i.e. liquid crystal displays
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- B32B2551/00—Optical elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2551/00—Optical elements
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
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- Y10T428/00—Stock material or miscellaneous articles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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- Y10T428/31786—Of polyester [e.g., alkyd, etc.]
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Description
「屈折率」とは、特に指示がない限り、材料の平面内における、633nmの光を法線入射させた場合の材料の屈折率を意味する。
「ポリマー」とは、特に指示がない限り、ポリマー類及びコポリマー類(即ち、2種類又はそれ以上のモノマー類又はコモノマー類から形成されたポリマー類であり、例えば、ターポリマー類を包含する)を意味し、同様に例えば、共押出又は反応(例えば、エステル交換を包含する)による混和性ブレンドに形成可能なコポリマー類又はポリマー類を意味する。特に指示がない限り、ブロック、ランダム、グラフト、及び交互ポリマー類が包含され;
「拘束一軸延伸」とは、外部応力を適用して、主として2方向、面内延伸方向(即ち、x)及び面内に対して直角方向(即ち、y)に寸法変化を生じさせる、フィルム延伸加工を意味する。具体的には、それは、面内非延伸方向でフィルム幅を実質的に維持しながらの面内延伸方向での寸法伸びを意味する。その結果、フィルムの厚み減少は通常、フィルム延伸比に対応しており、構造は主に平面であり;かつ
「非拘束一軸延伸」とは、外部応力が適用されて3方向全てに寸法変化が生じる、フィルム延伸加工を意味する。フィルム幅は、延伸方向長さに比較して(compare to)、通常は小さい。具体的には、それは、フィルム厚及びフィルム幅の両方が減少しながらの、面内延伸方向での寸法伸びを意味する。その結果、フィルム厚の減少は、同一延伸比にて拘束一軸延伸フィルムより小さい。更に、フィルム構造はより円筒形かつ繊維様である。
示差走査熱量計(DSC):
DSC(Q2000、ティー・エイ・インスツルメンツ(TA Instruments)(デラウェア州ニューカッスル)から市販されている)を使用して、材料を試験した。各組成物について、約5〜10mgのサンプルを使用した。試験では、30〜290℃の温度範囲にて、3段階・加熱−冷却−加熱の温度傾斜を使用した。第1加熱後、サンプルは290℃にて3分間維持した。加熱及び冷却の両方について、傾斜率は20℃/分であった。第1加熱走査及び第2加熱走査の両方を分析した。
種々のサンプルの屈折率を、メトリコン・プリズム・カプラー(Metricon Prism coupler)(Metricon Corporation,Pennington,N.J.)を用いて、MD、TD、及びTM方向において測定した。MD及びTDは面内方向であり、TMは膜表面に対して垂直である。MD、TD及びTMの屈折率は、それぞれnx、ny、及びnzと表記する。
一軸延伸フィルムの複屈折性を測定するために、面内複屈折が使用される。
二軸配向フィルムの複屈折性を測定するために、面外複屈折が使用される。
熱劣化は、溶融温度を超える温度にて(at a temperature above melt)、時間関数としての粘度降下をモニタリングすることによって測定した。これは、レオメーター(ARES、ティー・エイ・インスツルメンツ(TA Instruments)(デラウェア州ニューカッスル)から市販されている)を使用し、時間掃引走査によって達成された。温度は、それぞれ250℃及び280℃であった。粘度を測定した(振動モード)剪断速度は、100s−1であった。試験前に、70℃にて48時間、材料を真空乾燥させた。窒素を使用して試験用器具をパージして、全ての酸素を置換した。
材料サンプルは、重水素化クロロホルム及びトリフルオロ酢酸の1:1混合物中に溶解させた。デュアルチャンネル・バリアン(Varian)チリ(Chili)プローブを装備した500MHz装置にて、1D NMRスペクトルを収集した。一体化されたモノマー組成物が、既知の特定のケミカルシフト及びピーク面積に基づいて抽出される。フェージング及びベースライン補正後、インテグレーションを実施した。
NDC−ナフタレンジカルボン酸−BPアモコ(BP Amoco)(イリノイ州ネーパービル(Naperville))
DMT−ジメチルテレフタレート−インヴィスタ(Invista)(カンザス州ウィチタ(Wichita))
DMSSIP−ジメチルスルホナトリウムイソフタレート(アイオノマー)−デュポン(DuPont)(デラウェア州ウィルミントン)
EG−エチレングリコール−MEグローバル(ミシガン州ミッドランド)
NPG−ネオペンチルグリコール−イーストマン(Eastman)(テネシー州キングズポート)
CHDM−シクロヘキサンジメタノール−イーストマン(Eastman)(テネシー州キングズポート)
触媒&安定剤
TEPA−トリエチルホスホノアセテート−ローディア(Rhodia)(ニュージャージー州クランベリー(Cranbury))
NaOAc−酢酸ナトリウム−アルファ・エイサー(マサチューセッツ州ワードヒル(Ward Hill))
Co(OAc)2−酢酸コバルト−シェパード・ケミカル(Shepherd Chemical)(オハイオ州シンシナティ)
Zn(OAc)2−酢酸亜鉛−マリンクロット・ベーカー(Mallinckrodt Baker)(ニュージャージー州フィリップスバーグ)
Sb(OAc)3−三酢酸アンチモン−アルケマ(Arkema)(ペンシルベニア州フィラデルフィア)
複屈折コポリマー材料の合成:
実施例中の全てのコポリマーは、以下の手順にしたがって合成された。
実施例12〜34の3層共押出フィルムは、以下の手順で作製した。
反射偏光子は、第1複屈折層としてのPEN及び第2層としての等方性coPEN1を、層を交互に配置させて全体で約900層を持つように同時押出成形することにより、次にフィルムを横断方向に、標準的幅出し機フレーム内で延伸することにより作製した。
反射偏光子は、第1複屈折層としての90/10coPEN及び第2層としての等方性coPEN3を、層を交互に配置させて全体で275層を持つように同時押出成形することにより、次に、横断方向に標準的幅出し機フレームプロセスにて、毎秒約100%の平均速度、約6:1の延伸比、及び148℃(300°F)の温度にて、フィルムを延伸することにより作製した。
反射偏光子は、第1複屈折層としてのPEN−CHDM10及び第2層としての等方性coPEN3を、層を交互に配置させて全体で275層を持つように同時押出成形することにより、次に、横断方向に標準的幅出し機フレームプロセスにて、毎秒約100%の平均速度、約6:1の延伸比、及び140℃(285°F)の温度にて、フィルムを延伸することにより作製した。
反射偏光子は、第1複屈折層としてのPEN−CHDM5及び第2層としての等方性coPEN4を、層を交互に配置させて全体で275層を持つように同時押出成形することにより、次に、横断方向に標準的幅出し機フレームプロセスにて、毎秒約100%の平均速度、約6:1の延伸比、及び140℃(285°F)の温度にて、フィルムを延伸することにより作製した。
Claims (3)
- コポリエステル全体の単位を基準として、
40〜50モル%のナフタレート単位、
35〜49モル%のエチレン単位、及び
1〜8モル%の分枝鎖又は環状のC4〜C10アルキル単位を含むコポリエステルを含む第1複屈折光学層を、少なくとも1つと、
該第1複屈折光学層よりも小さい複屈折を有する第2光学層を、少なくとも1つと、
を含む、多層光学フィルム。 - コポリエステル全体の単位を基準として、
40〜50モル%のナフタレート単位、
35〜49モル%のエチレン単位、及び
1〜8モル%の分枝鎖又は環状のC4〜C10アルキル単位を含む複屈折コポリエステルフィルムであって、
該複屈折コポリエステルフィルムが、632.8nmにて少なくとも0.10の面外複屈折を有する、複屈折コポリエステルフィルム。 - 前記第1複屈折光学層が、632.8nmにて少なくとも0.10の面外複屈折を有する、請求項1記載の多層光学フィルム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/114,109 US8012571B2 (en) | 2008-05-02 | 2008-05-02 | Optical film comprising birefringent naphthalate copolyester having branched or cyclic C4-C10 alkyl units |
US12/114,109 | 2008-05-02 | ||
PCT/US2009/039736 WO2009134595A1 (en) | 2008-05-02 | 2009-04-07 | Optical film comprising birefringent naphthalate copolyester having branched or cyclic c4-c10 alkyl units |
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JP2011520141A JP2011520141A (ja) | 2011-07-14 |
JP2011520141A5 JP2011520141A5 (ja) | 2012-04-26 |
JP5684701B2 true JP5684701B2 (ja) | 2015-03-18 |
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JP2011507524A Expired - Fee Related JP5684701B2 (ja) | 2008-05-02 | 2009-04-07 | 分枝鎖又は環状のc4〜c10アルキル単位を有する複屈折ナフタレートコポリエステルを含む光学フィルム |
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US (2) | US8012571B2 (ja) |
EP (1) | EP2288503A1 (ja) |
JP (1) | JP5684701B2 (ja) |
KR (1) | KR101588478B1 (ja) |
CN (1) | CN102046379B (ja) |
TW (1) | TW201000941A (ja) |
WO (1) | WO2009134595A1 (ja) |
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EP2020339B1 (de) * | 2007-07-31 | 2012-03-28 | Micronas GmbH | Auslösevorrichtung für eine Sicherheitseinrichtung in einem Kraftfahrzeug |
US8012571B2 (en) | 2008-05-02 | 2011-09-06 | 3M Innovative Properties Company | Optical film comprising birefringent naphthalate copolyester having branched or cyclic C4-C10 alkyl units |
WO2010008933A1 (en) * | 2008-07-16 | 2010-01-21 | 3M Innovative Properties Company | Multilayer optical film layer comprising blend of methyl methacrylate polymer and styrene acrylonitrile polymer |
US7936802B2 (en) * | 2008-10-21 | 2011-05-03 | Case Western Reserve University | Co-extruded multilayer polymers films for all-polymer lasers |
JP5540014B2 (ja) | 2008-12-22 | 2014-07-02 | スリーエム イノベイティブ プロパティズ カンパニー | 並列ミラー/偏光子ゾーンを有する多層光学フィルム |
EP2588901A1 (en) | 2010-06-30 | 2013-05-08 | 3M Innovative Properties Company | Retarder film combinations with spatially selective birefringence reduction |
JP5905879B2 (ja) * | 2010-06-30 | 2016-04-20 | スリーエム イノベイティブ プロパティズ カンパニー | 多層光学フィルム |
US9101956B2 (en) | 2010-06-30 | 2015-08-11 | 3M Innovative Properties Company | Mask processing using films with spatially selective birefringence reduction |
EP3299855B1 (en) | 2010-06-30 | 2019-06-19 | 3M Innovative Properties Company | Diffuse reflective optical films with spatially selective birefringence reduction |
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EP2288503A1 (en) | 2011-03-02 |
CN102046379A (zh) | 2011-05-04 |
KR101588478B1 (ko) | 2016-01-25 |
TW201000941A (en) | 2010-01-01 |
KR20110007238A (ko) | 2011-01-21 |
JP2011520141A (ja) | 2011-07-14 |
US20090273836A1 (en) | 2009-11-05 |
US20110268939A1 (en) | 2011-11-03 |
US8263731B2 (en) | 2012-09-11 |
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