JPWO2016088740A1 - ポリエステル樹脂を含む機能性シート及びそれを用いたレンズ - Google Patents
ポリエステル樹脂を含む機能性シート及びそれを用いたレンズ Download PDFInfo
- Publication number
- JPWO2016088740A1 JPWO2016088740A1 JP2016562626A JP2016562626A JPWO2016088740A1 JP WO2016088740 A1 JPWO2016088740 A1 JP WO2016088740A1 JP 2016562626 A JP2016562626 A JP 2016562626A JP 2016562626 A JP2016562626 A JP 2016562626A JP WO2016088740 A1 JPWO2016088740 A1 JP WO2016088740A1
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- Prior art keywords
- resin
- lens
- layer
- aromatic polycarbonate
- functional sheet
- Prior art date
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- Granted
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract
Description
即ち、本発明は以下の通りである。
<1> 偏光フィルム層、調光層またはこれらの組み合わせである機能層を保護層Iと保護層IIで挟んだ機能性シートであって、前記保護層のうち少なくとも片面が、1,4‐シクロヘキサンジメタノールと1,4-シクロヘキサンジカルボン酸とを重縮合させて得られるポリエステル樹脂(A)と芳香族ポリカーボネート樹脂(B)とが、(A)と(B)の合計100質量部に対し、(A)が10〜100質量部配合され、(B)が0〜90質量部配合されている樹脂(C)からなる層を有することを特徴とする機能性シートである。
<2> 樹脂(C) からなる層を有する保護層が、樹脂(C)からなる層と芳香族ポリカーボネート樹脂からなる層を共押出成形法により積層一体化されてなり、且つ樹脂(C) からなる層が表面層であることを特徴とする上記<1>に記載の機能性シートである。
<3> 上記<1>又は<2>に記載の機能性シートを球面あるいは非球面に曲げ加工してなるレンズである。
<4> 上記<1>又は<2>に記載の機能性シートを樹脂(C) からなる層が凸面表面になるよう曲げ加工した後に金型内にインサートし、凹面側に透明樹脂を一体射出成形して得られるレンズである。
<5> 上記<3>又は<4>に記載のレンズに染色処理をして得られる着色レンズである。
<6> 前記レンズがハードコートを有している上記<3>から<5>のいずれかに記載のレンズである。
<7> 上記<3>から<6>のいずれかに記載のレンズを用いたアイウェアである。
本発明で用いられるポリエステル樹脂(A)としては、例えば、1,4−シクロヘキサンジメタノールと1,4−シクロヘキサンジカルボン酸とをエステル化又はエステル交換反応により重縮合させて得られるポリエステル樹脂が使用可能であり、市販品として入手可能であるポリエステル樹脂としては、三菱化学製のポリエステル系熱可塑性エラストマー「プリマロイCP300」が例示される。より好ましくは、1,4−シクロヘキサンジメタノールと1,4−シクロヘキサンジカルボン酸からなるポリ(1,4−シクロヘキサンジメタノール−1,4−シクロヘキサンジカルボキシレート)樹脂であり、市販品として入手可能であるポリエステル樹脂としては、三菱化学製のポリエステル系熱可塑性エラストマー「プリマロイCP200」や「プリマロイCP201」が例示される。
一般式(a)中のXに関し、R3およびR4は水素原子または炭素数1〜10のアルキル基あるいはフェニル基であり、R3とR4が結合し環を形成していてもよい。
本発明における芳香族ポリカーボネート樹脂(B)には、その他の成分を加えてもよく、その他の成分としては、特に制限はなく、目的に応じて適宜選択することができ、例えば、酸化防止剤、離型剤、紫外線吸収剤、流動性改質剤、結晶核剤、強化剤、染料、帯電防止剤、抗菌剤、などが挙げられる。これらは、1種単独で使用してもよいし、2種以上を併用してもよい。
さらに、芳香族ポリカーボネート樹脂(B)の分子量については、シート自体の成形における点から粘度平均分子量で12,000〜40,000のものが好ましく、シート強度、耐熱性、耐久性あるいは曲げ加工性の点から、特に20,000〜35,000のものが好ましい。
PVAフィルムとしては、重量平均分子量が50,000〜350,000、好ましくは150,000〜300,000である。原料フィルム厚みは、通常100〜300μm程度であり、PVA偏光フィルムは通常10〜50μmである。
PVAフィルムの延伸倍率は2〜8倍であり、目的に応じて適宜選択されるが、延伸後の強度の点から3〜5倍が好ましい。
(実施例1)
<保護層シートの作製>
ポリエステル樹脂(A)(三菱化学製、商品名:プリマロイCP201)を軸径30mmの単軸押出機と、押出機に連結されたフィードブロックと、フィードブロックに連結されたTダイとを有する押出装置(プラエンジ製、PSV-30)を用いて保護層シートを成形した。軸径30mmの単軸押出機にポリエステル樹脂(A)を連続的に導入し、シリンダ温度250℃の条件で押し出した。その先に連結された温度250℃のTダイでシート状に押し出し、鏡面仕上げロールで鏡面を転写しながら冷却し、ポリエステル樹脂(A)のシートを得た。このときロールの設定温度は100℃とした。
ポリビニルアルコール(クラレ株式会社製、商品名:VF−PS#7500)を35℃の水中で270秒間膨潤しつつ、2倍に延伸した。
引き続いて、カヤラススプラブルーBWL、スミライトレッド4B、スミライトスプラオレンジ2GL、および10g/Lの無水硫酸ナトリウムを含む35℃の水溶液中で染色しつつ、3倍に延伸した。
この染色フィルムを酢酸ニッケル2.3g/Lおよびホウ酸4.4g/Lを含む水溶液中35℃で120秒間浸漬しつつ、4倍に延伸した。そのフィルムを緊張状態が保持された状態で室温にて3分乾燥を行った後、110℃で3分間加熱処理し、透過率35%、偏光度99%の偏光フィルムを得た。
ポリウレタンプレポリマー50重量部に対し、硬化剤5重量部、溶媒として酢酸エチル60重量部を使用して接着剤組成物を調製した。この接着剤組成物を前述した偏光フィルムにバーコーター#24を用いて塗布し、70℃で10分間乾燥させた後、前述した保護層シートと上記偏光フィルム上の接着剤組成物とをラミネーターで貼り合わせた。得られた積層シートの偏光フィルム側に上記と同様の方法で接着剤組成物を塗布し、もう1枚の保護層シートを同様に貼り合わせ、機能性シートを得た。硬化後の接着剤塗膜の厚みは9〜11μmであった。また、保護層シートの厚みはそれぞれ0.3mmであった。
得られた機能性シートを真空吸引付きでシリコンゴムシート被覆を備えた凹球面曲げ型(曲率半径66.81mm、ベースカーブ7.932)を用い、表面温度145℃に設定した雌型のシリコンゴムシート上にカット片を載せ、真空吸引を開始し、次にシリコンゴムシート被覆した雄型にて加圧することにより球面曲げ加工を行った。なお、ここで言うベースカーブとは、レンズ前面の曲率であり、530をミリメータ単位の曲率半径で除した値のことである。
曲げ加工した機能性シートの凸面側を射出成形金型に接するようにインサートし、凹面側に芳香族ポリカーボネート樹脂(三菱エンジニアリングプラスチックス社製、商品名:ユーピロンCLS3400)を射出成形してレンズ化した。射出成形条件は、樹脂温度300℃、金型温度80℃、保圧60MPaにそれぞれ設定した。
分散染料としてBPIブラウン#31100(Brain Power Inc.製)88mlを純水1Lに添加し、93℃に保温して茶色の染色液を得た。前記偏光レンズを93℃で分浸漬して着色レンズを得た。分光光度計(島津製作所製;商品名「UV−2700」)にて前記着色レンズの分光透過率を測定し、染色前後の透過率差(染色後の染色量)を評価した。ここで、透過率はJIS Z−8701で規格される、C光源を用いた2度視野における視感透過率である。
上記作製した着色レンズをメタノールに30分浸漬させ、染色前と脱色後の透過率差(脱色後の染色量)を評価した。さらに、浸漬前後の脱色率を評価した。ここで言う脱色率とは、数式「(染色後の染色量−脱色後の染色量)/(染色後の染色量)×100」を用いて計算した値とした。透過率測定は着色性評価に用いた試験機を使用し、同様の方法で測定した。
上記着色レンズにディップコーターでハードコーティング処理を施し、ハードコート付着色レンズを得た。
染色前後の透過率及び染色量、並びに脱色後の透過率、染色量及び脱色率の値を以下の表1に示す。
実施例1において、ポリエステル樹脂(A)と芳香族ポリカーボネート樹脂(B)(三菱エンジニアリングプラスチックス社製、商品名:ユーピロンE-2000(以下同じ))の合計100質量部に対し、ポリエステル樹脂(A)を40質量部配合し、芳香族ポリカーボネート樹脂(B)を60質量部配合して保護層シートを作製した以外は、実施例1と同様に着色レンズを作製し、同様の評価を行った。評価結果を表1に示す。
実施例1において、ポリエステル樹脂(A)と芳香族ポリカーボネート樹脂(B)の合計100質量部に対し、ポリエステル樹脂(A)を30質量部配合し、芳香族ポリカーボネート樹脂(B)を70質量部配合して保護層シートを作製した以外は、実施例1と同様に着色レンズを作製し、同様の評価を行った。評価結果を表1に示す。
実施例1において、ポリエステル樹脂(A)と芳香族ポリカーボネート樹脂(B)の合計100質量部に対し、ポリエステル樹脂(A)を20質量部配合し、芳香族ポリカーボネート樹脂(B)を80質量部配合して保護層シートを作製した以外は、実施例1と同様に着色レンズを作製し、同様の評価を行った。評価結果を表1に示す。
実施例1において、ポリエステル樹脂(A)と芳香族ポリカーボネート樹脂(B)の合計100質量部に対し、ポリエステル樹脂(A)を10質量部配合し、芳香族ポリカーボネート樹脂(B)を90質量部配合して保護層シートを作製した以外は、実施例1と同様に着色レンズを作製し、同様の評価を行った。評価結果を表1に示す。
実施例1において、保護層シートとして共押出法により製造されたポリエステル樹脂(A)と芳香族ポリカーボネート樹脂からなる積層体を使用し、芳香族ポリカーボネート樹脂層が偏光フィルム上に塗布した接着剤組成物と貼り合わさるよう積層した機能性シートを用いた以外は、実施例1と同様に着色レンズを作製し、同様の評価を行った。評価結果を表1に示す。
実施例5において、保護層シートの厚みを0.7mmとし、射出成形レンズ化しない以外は、実施例5と同様に着色レンズを作製し、同様の評価を行った。評価結果を表1に示す。
実施例1において、ポリエステル樹脂(A)の代わりに芳香族ポリカーボネート樹脂(B)を用いて保護層シートを作製した以外は、実施例1と同様に着色レンズを作製し、同様の評価を行った。評価結果を表1に示す。
Claims (7)
- 保護層Iと保護層IIとの間に、偏光フィルム層、調光層またはこれらの組み合わせである機能層を有する機能性シートであって、前記保護層のうち少なくとも片面の保護層が、1,4‐シクロヘキサンジメタノールと1,4-シクロヘキサンジカルボン酸とが重縮合されたポリエステル樹脂(A)と芳香族ポリカーボネート樹脂(B)とが、(A)と(B)の合計100質量部に対し、(A)が10〜100質量部配合され、(B)が0〜90質量部配合されている樹脂(C) からなる層を有することを特徴とする機能性シート。
- 樹脂(C) からなる層を有する保護層が、樹脂(C)からなる層と芳香族ポリカーボネート樹脂からなる層とが積層一体化されたものであり、且つ樹脂(C) からなる層が表面層であることを特徴とする請求項1に記載の機能性シート。
- 請求項1又は2に記載の機能性シートが球面あるいは非球面に曲げ加工されてなるレンズ。
- 請求項1又は2に記載の機能性シートが樹脂(C) からなる層が凸面表面になるよう曲げ加工されてなり、凹面側に透明樹脂が一体射出成形されてなるレンズ。
- 請求項3又は4に記載のレンズが染色処理されてなる着色レンズ。
- 前記レンズがハードコートを有している請求項3から5のいずれかに記載のレンズ。
- 請求項3から6のいずれかに記載のレンズを用いたアイウェア。
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US10627650B2 (en) * | 2013-09-10 | 2020-04-21 | Mitsui Chemicals, Inc. | Optical material and use thereof |
WO2015111003A1 (en) * | 2014-01-24 | 2015-07-30 | Sabic Global Technologies B.V. | Photochromic polycarbonate compositions, methods of manufacture, and articles comprising the same |
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EP3229061A4 (en) | 2018-09-19 |
TWI716369B (zh) | 2021-01-21 |
EP3229061B1 (en) | 2020-11-04 |
KR20170091683A (ko) | 2017-08-09 |
EP3229061A1 (en) | 2017-10-11 |
US10816699B2 (en) | 2020-10-27 |
WO2016088740A1 (ja) | 2016-06-09 |
JP6684722B2 (ja) | 2020-04-22 |
TW201631029A (zh) | 2016-09-01 |
US20170329054A1 (en) | 2017-11-16 |
CN107003546A (zh) | 2017-08-01 |
ES2834395T3 (es) | 2021-06-17 |
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