JP2011042784A - 白色多孔性ポリエステルフィルム、及びこの製造方法 - Google Patents
白色多孔性ポリエステルフィルム、及びこの製造方法 Download PDFInfo
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- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 description 1
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Abstract
【解決手段】ポリエステル樹脂、ポリエステルと非相溶性である結晶性高分子樹脂、無機粒子、増白剤及び安定剤を含む。本発明の白色多孔性ポリエステルフィルムは、白色度、隠蔽力、反射率等、光学特性に優れて各種印刷材料、ラベル、電子材料及びディスプレイ用素材として有用に使用され得る。
【選択図】図1
Description
ジメチルテレフタレートとエチレングリコールを1:2の当量比で混合した後、この混合物にエステル交換反応の触媒としてマンガンアセテートを0.03重量%の量で添加してポリエチレンテレフタレートの単量体である、ビス-2−ヒドロキシエチルテレフタレートを製造した。ここに、テトラキス-3,5-ジ-t-ブチルヒドロキシフェニルプロパノイルメチルメタンを0.2重量%と、縮重合の触媒として酸化アンチモン0.05重量%を添加し、縮重合を完結させ、極限粘度が0.66dL/gでありガラス転移温度が73℃であるポリエステル第1樹脂を製造した。
それぞれの混合成分を下記の表1に記載された含量で使用してチップを製造することを除いては前記実施例1と同一の方法で行い、二軸延伸されたフィルムを製造した。
非相溶性結晶性高分子樹脂の代わりに、非相溶性非結晶性高分子樹脂であるノボネン(norbornene)とエチレンの共重合体(Topas-5013F、6013F、及び6015S、ポリプラスチックス社)を使用し、それぞれの成分を下記の表1に記載された含量で使用してチップを製造することを除いては前記実施例1と同一の方法で行い、二軸延伸されたフィルムを製造した。
非相溶性結晶性高分子樹脂の代わりに相溶性高分子樹脂であるポリメチルメタクリレートを使用し、それぞれの成分を下記の表1に記載された量で使用してチップを製造することを除いては前記実施例1と同一の方法で行い、二軸延伸されたフィルムを製造した。
前記実施例1乃至3及び比較例1乃至4において製造されたポリエステルフィルムの物性及び性能評価は次のような方法で実施した。
ASTME313の方法により米国ハンターラブ(Hunterlab)社のスペクトロフォトメーターを利用して測定する。
米国ハンターラブ社のスペクトロフォトメーターを利用して測定する。
米国ハンターラブ社のスペクトロフォトメーターを利用して測定する。
二軸延伸工程下で、縦方向(MD)/横方向(TD)の最大延伸比及び破断に対する安定性について評価する。
Claims (14)
- ポリエステル系単一重合体/共重合体ブレンド樹脂、ポリエステルと非相溶性であり、熱変形温度が90℃以上である結晶性高分子樹脂、無機粒子、増白剤及び安定剤を含み、前記結晶性高分子樹脂及び無機粒子の全体フィルムに対する総含量が10乃至45重量%である白色多孔性ポリエステルフィルム。
- 前記ブレンド樹脂がポリエチレンテレフタレート(PET)、ポリエチレンナフタレート(PEN)及びこれらの混合物の中から選ばれるポリエステル系単一重合体樹脂、及び前記ポリエステル系単一重合体樹脂にイソフタル酸、ジメチルイソフタレートまたはシクロヘキサンジメタノールを共重合して得たポリエステル系共重合体樹脂をブレンドして得られたものであることを特徴とする請求項1に記載の白色多孔性ポリエステルフィルム。
- 前記ブレンド樹脂内のポリエステル系単一重合体と共重合体の混合比率が、8:2乃至2:8であることを特徴とする請求項1に記載の白色多孔性ポリエステルフィルム。
- 前記結晶性高分子樹脂が、0.2(MJm-3)1/2以上のポリエステルとの混合エンタルピー値を有することを特徴とする請求項1に記載の白色多孔性ポリエステルフィルム。
- 前記結晶性高分子樹脂が、シンジオタクチックポリスチレンであることを特徴とする請求項1に記載の白色多孔性ポリエステルフィルム。
- 前記フィルムがポリエステル系単一重合体/共重合体ブレンド樹脂を50乃至89重量%、増白剤0.01乃至0.2重量%及び安定剤0.01乃至5重量%を含むことを特徴とする請求項1に記載の白色多孔性ポリエステルフィルム。
- 前記フィルムが95%以上の白色度、5%以下の光透過率、95%以上の400乃至700nmの波長範囲における平均反射率、及び95%以上の550nmにおける反射率を有することを特徴とする請求項1に記載の白色多孔性ポリエステルフィルム。
- 前記無機粒子が硫酸バリウム、二酸化チタン、炭酸カルシウム、シリカ、カオリン、タルク、ゼオライト及びこれらの混合物からなる群から選ばれ、0.1乃至0.7μmの平均粒径を有することを特徴とする請求項1に記載の白色多孔性ポリエステルフィルム。
- 前記増白剤が、2,2’-(1,2エテンジイルジ-4,1-フェニレン)ビスベンゾオキサゾールまたは2,2’-(4,4ジフェニルビニル)ジベンゾオキサゾールであることを特徴とする請求項1に記載の白色多孔性ポリエステルフィルム。
- 前記フィルムが1乃至5μm及び10乃至20μmの平均粒径を有する2種の気孔を内部に含むことを特徴とする請求項1に記載の白色多孔性ポリエステルフィルム。
- a)ポリエステル系単一重合体/共重合体ブレンド樹脂、ポリエステルと非相溶性であり、熱変形温度が90℃以上である結晶性高分子樹脂、無機粒子、増白剤及び安定剤を混合するが、前記結晶性高分子樹脂及び無機粒子の全体フィルムに対する総含量が10乃至45重量%となるように混合する段階、
b)前記混合樹脂を溶融-押出して未延伸シートを得る段階、及び
c)前記未延伸シートを縦方向及び横方向に二軸延伸する段階を含む、白色多孔性ポリエステルフィルムの製造方法。 - 前記段階b)において、溶融-押出工程で溶融体としての滞留時間を0.5乃至3分の範囲とすることを特徴とする請求項11に記載の白色多孔性ポリエステルフィルムの製造方法。
- 前記段階c)において、前記縦方向及び横方向の延伸比がそれぞれ3乃至6倍であることを特徴とする請求項11に記載の白色多孔性ポリエステルフィルムの製造方法。
- 前記段階c)において、二軸延伸工程で各方向に2回以上の多段延伸を進行させ、この際、各方向の最初の一段延伸時に前記ポリエステルのガラス転移温度+10乃至30℃の温度範囲において、少なくとも1.5倍以上延伸することを特徴とする請求項11に記載の白色多孔性ポリエステルフィルムの製造方法。
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| KR1020090077229A KR101117125B1 (ko) | 2009-08-20 | 2009-08-20 | 백색 다공성 폴리에스테르 필름 및 이의 제조방법 |
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| EP (1) | EP2287252A3 (ja) |
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| Publication number | Publication date |
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| KR20110019614A (ko) | 2011-02-28 |
| US8999499B2 (en) | 2015-04-07 |
| TW201113321A (en) | 2011-04-16 |
| TWI457392B (zh) | 2014-10-21 |
| EP2287252A3 (en) | 2014-10-08 |
| US20110046254A1 (en) | 2011-02-24 |
| EP2287252A2 (en) | 2011-02-23 |
| KR101117125B1 (ko) | 2012-02-24 |
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