JP6034415B2 - フッ素重合体多層光学フィルム並びにその作成方法及び使用方法 - Google Patents
フッ素重合体多層光学フィルム並びにその作成方法及び使用方法 Download PDFInfo
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Description
「及び/又は」は、一方又は両方の記述された事例が起こる場合があることを示すために使用され、例えば、A及び/又はBは、(A及びB)と(A又はB)とを含み、
「共重合」は、高分子化合物を生成するためにともに重合されるモノマーを指し、
「共重合体」は、少なくとも2つの異なる共重合モノマー(即ち、モノマーが同じ化学構造を有さない)を含む重合体材料を指し、例えば、ターポリマー(3つの異なるモノマー)、又はテトラポリマー(4つの異なるモノマー)を含み、
「重合体」は、同じモノマー(単独重合体)又は異なるモノマー(共重合体)の共重合モノマーを含む重合体材料を指し、
「光」は、200nm〜2500nmの範囲の波長を有する電磁放射を指し、
「溶融加工可能」は、押出成形機などの通常の処理装置において溶融、加熱及び/又は加圧で流れる重合体材料を指し、
「光学層」は、反射される光の約4分の1波長の厚さを有する材料の層を指す。
1. 光学スタックを含む多層光学フィルムであって、前記光学スタックが、a)第1のフッ素重合体材料を含む第1の光学層と、b)第2のフッ素重合体材料を含む第2の光学層と、を含み、前記第1の光学層の少なくとも一部分及び前記第2の光学層の少なくとも一部分が、密接している、多層光学フィルム。
2. 前記第1のフッ素重合体材料と前記第2のフッ素重合体材料との屈折率差が、0.20未満である、態様1に記載の多層光学フィルム。
3. 前記第1のフッ素重合体材料と前記第2のフッ素重合体材料との屈折率差が、0.10未満である、態様1又は2に記載の多層光学フィルム。
4. 前記フッ素重合体材料が、TFE、VDF、VF、HFP、CTFE、フルオロアルキルビニルエーテル、フルオロアルコキシビニルエーテル、フッ素化スチレン、HFPO、フッ素化シロキサン、又はこれらの組み合わせのモノマーの少なくとも1つの共重合単位から誘導される単独重合体又は共重合体を含む、態様1〜3のいずれか一項に記載の多層光学フィルム。
5. 前記フッ素重合体材料が、エチレンとテトラフロオルエチレンの共重合体、テトラフロオルエチレンとヘキサフルオロプロピレンとフッ化ビニリデンの共重合体、フッ化ビニリデンの単独重合体、フッ化ビニリデンの共重合体、テトラフロオルエチレンとプロピレンの共重合体、テトラフロオルエチレンとペルフルオロビニルエーテルの共重合体、ヘキサフルオロプロピレンとテトラフロオルエチレンとエチレンの共重合体、クロロトリフルオロエチレンの単独重合体、エチレンとクロロトリフルオロエチレンの共重合体、ヘキサフルオロプロピレン酸化物の単独重合体、4−フルオロ(2−トリフルオロメチル)スチレンの単独重合体、及びテトラフロオルエチレンとノルボルネンの共重合体からなる群から選択される、態様1〜4のいずれか一項に記載の多層光学フィルム。
6. 前記光学スタックが、フッ化ビニリデンの単独重合体と(テトラフロオルエチレン、ヘキサフルオロプロピレン、及びフッ化ビニリデンの共重合体)の層ペア、(エチレン及びクロロトリフルオロエチレンの共重合体)と(テトラフロオルエチレン、ヘキサフルオロプロピレン、及びフッ化ビニリデンの共重合体)の層ペア、(ヘキサフルオロプロピレン、テトラフロオルエチレン、及びエチレンの共重合体)と(テトラフロオルエチレン、ヘキサフルオロプロピレン、及びフッ化ビニリデンの共重合体)の層ペア、(ヘキサフルオロプロピレン、テトラフロオルエチレン、及びエチレンの共重合体)と(エチレン及びテトラフロオルエチレンの共重合体)の層ペア、(ヘキサフルオロプロピレン、テトラフロオルエチレン、及びエチレンの共重合体)と(テトラフロオルエチレン及びノルボルネンの共重合体)の層ペア、並びに(エチレン及びテトラフロオルエチレンの共重合体)と(テトラフロオルエチレン、ヘキサフルオロプロピレン、及びフッ化ビニリデンの共重合体)の層ペアからなる群から選択される層ペアを含む、態様1〜5のいずれか一項に記載の多層光学フィルム。
7. 前記第1のフッ素重合体材料又は前記第2のフッ素重合体材料の少なくとも1つが、複屈折である、態様1〜6のいずれか一項に記載の多層光学フィルム。
8. 前記光学スタックが、少なくとも5個の第1の光学層と、少なくとも5個の第2の光学層とを含む、態様1〜7のいずれか一項に記載の多層光学フィルム。
9. 前記光学スタックが、少なくとも50個の第1の光学層と、少なくとも50個の第2の光学層とを含む、態様1〜8のいずれか一項に記載の多層光学フィルム。
10. 前記多層光学フィルムが延伸比を有し、全体延伸比が3:1を超える、態様1〜9のいずれか一項に記載の多層光学フィルム。
11. 前記全体延伸比が、4:1を超える、態様1〜10のいずれか一項に記載の多層光学フィルム。
12. 前記全体延伸比が、6:1を超える、態様1〜11のいずれか一項に記載の多層光学フィルム。
13. a)印刷、b)接着剤、c)耐引裂層、d)紫外線吸収層、e)スキン層、又はf)保護境界層のうちの少なくとも1つを更に含む、態様1〜12のいずれか一項に記載の多層光学フィルム。
14. 紫外線吸収化合物、赤外線吸収化合物、又はこれらの組み合わせを更に含み、前記第1の光学層、前記第2の光学層、又は任意の追加層が、前記紫外線吸収化合物、前記赤外線吸収化合物、又はこられの組み合わせを含む、態様1〜13のいずれか一項に記載の多層光学フィルム。
15. 必要に応じて機能性添加剤を更に含み、前記機能性添加剤が、加工添加剤である、態様1〜14のいずれか一項に記載の多層光学フィルム。
16. 前記多層フィルムが、a)約400〜700nmの波長の少なくとも一部分、b)約700nmを超える波長の少なくとも一部分、c)約300nm未満の波長の少なくとも一部分、又はd)約300〜400nmの波長の少なくとも一部分のうちの少なくとも1つを透過する、態様1〜15のいずれか一項に記載の多層光学フィルム。
17. 前記多層フィルムが、a)約400〜700nmの波長の少なくとも一部分、b)約700nmを超える波長の少なくとも一部分、c)約300nm未満の波長の少なくとも一部分、又はd)約300〜400nmの波長の少なくとも一部分のうちの少なくとも1つを反射する、態様1〜16のいずれか一項に記載の多層光学フィルム。
18. 態様1〜17のいずれか一項に記載の多層光学フィルムを含む物品。
19. 態様18に記載の物品が、a)ソーラーパワー技術、b)照明用途、c)反射防止用途、又はd)産業用途のうちの少なくとも1つに使用される、多層光学フィルムを使用する方法。
20. 多層光学フィルムを作成する方法であって、a)フッ素重合体材料を含む第1の光学層を提供する工程と、b)フッ素重合体材料を含む第2の光学層を提供する工程と、c)前記第1の光学層及び前記第2の光学層をウェブに共押出しする工程と、d)前記第1の光学層及び前記第2の光学層を交互に配置して多層フィルムを作成する工程と、を含む、方法。
21. 第1の光学層又は第2の光学層の少なくとも一方が、複屈折である、態様20に記載の方法。
本発明の予測可能な改良及び変更が、本発明の範囲及び趣旨から逸脱せずに実施できることは、当業者には明らかである。本発明は、例証の目的のために本出願において説明された実施形態に限定されるべきではない。
Claims (4)
- 光学スタックを含む多層光学フィルムであって、前記光学スタックが層ペアからなり、前記層ペアが
a)フッ化ビニリデンの単独重合体又はエチレンとテトラフルオロエチレンの共重合体から選択される第1のフッ素重合体材料からなる第1の光学層と、
b)テトラフルオロエチレン、ヘキサフルオロプロピレン、及びフッ化ビニリデンを含む共重合体からなる第2のフッ素重合体材料からなる第2の光学層と、
からなり、前記第1の光学層の少なくとも一部分及び前記第2の光学層の少なくとも一部分が密接している、多層光学フィルム。 - 請求項1に記載の多層光学フィルムを含む物品。
- 光学スタックを含む多層光学フィルムを作成する方法であって、
a)フッ化ビニリデンの単独重合体又はエチレンとテトラフルオロエチレンの共重合体からなる第1のフッ素重合体材料からなる第1の光学層を提供する工程と、
b)テトラフルオロエチレン、ヘキサフルオロプロピレン、及びフッ化ビニリデンを含む共重合体からなる第2のフッ素重合体材料からなる第2の光学層を提供する工程と、
c)前記第1の光学層及び前記第2の光学層をウェブに共押出しする工程と、
d)前記第1の光学層及び前記第2の光学層を交互に配置して前記光学スタックを作成する工程と、
を含む、方法。 - 前記多層光学フィルムが、(a)約700nmを超える波長の少なくとも一部分を反射し、且つ約700nmを超える波長の少なくとも30パーセントが、90度の入射角で、反射され、(b)約400〜700nmの波長の少なくとも一部分を透過し、且つ約400〜700nmの波長の少なくとも30パーセントが、90度の入射角で、透過される、請求項1に記載の多層光学フィルム。
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