JPH07268036A - Light-transmitting plastic filter with heat resistance - Google Patents
Light-transmitting plastic filter with heat resistanceInfo
- Publication number
- JPH07268036A JPH07268036A JP6061017A JP6101794A JPH07268036A JP H07268036 A JPH07268036 A JP H07268036A JP 6061017 A JP6061017 A JP 6061017A JP 6101794 A JP6101794 A JP 6101794A JP H07268036 A JPH07268036 A JP H07268036A
- Authority
- JP
- Japan
- Prior art keywords
- plastic filter
- heat resistance
- sheet
- light
- hard coat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Surface Treatment Of Optical Elements (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、耐熱性を有する透光性
プラスチックフィルターに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a translucent plastic filter having heat resistance.
【０００２】[0002]
【従来の技術】液晶ディスプレイ、ＣＲＴディスプレイ
等の表示装置には、眼の疲労を防止し、表示の視認性を
改良するために、外からの光の反射を防止する透光性プ
ラスチックフィルーが用いられている。透光性プラスチ
ックフィルターに使用されるプラスチックとしては、例
えば、メタクリル樹脂、ポリカーボネート樹脂などが挙
げられるが、自動車のナビゲーションシステム、ハンデ
ィカメラビデオなどの普及により、透光性プラスチック
フィルターの使用範囲が屋外や自動車の車内などの耐候
性や耐熱性が要求される過酷な使用環境条件下へ拡大し
てきている。このような過酷な環境条件下で使用する場
合、メタクリル樹脂を基板とするフィルターでは耐熱性
が低いために変形が生じるという問題があり、また、ポ
リカーボネート樹脂を基板とするフィルターでは耐候性
に劣るため黄変が起こるうえに表面硬度が低いためフィ
ルター面に傷が付きやすいという問題があった。2. Description of the Related Art A display device such as a liquid crystal display or a CRT display is provided with a translucent plastic film which prevents reflection of light from the outside in order to prevent eye fatigue and improve the visibility of the display. It is used. Examples of the plastic used for the translucent plastic filter include methacrylic resin and polycarbonate resin.However, due to the widespread use of car navigation systems, handy camera video, etc., the translucent plastic filter can be used in outdoor or outdoor areas. It is expanding to severe operating environment conditions where weather resistance and heat resistance are required such as in automobiles. When used under such harsh environmental conditions, there is a problem that a filter using a methacrylic resin as a substrate has low heat resistance and deformation occurs, and a filter using a polycarbonate resin as a substrate has poor weather resistance. There is a problem that the surface of the filter is easily scratched due to yellowing and low surface hardness.
【０００３】[0003]
【発明が解決しようとする課題】このようなことから、
本発明者らは、耐熱性、耐候性、表面硬度に優れ、過酷
な環境条件下でも使用可能な透光性プラスチックフィル
ターについて鋭意検討した結果、分子中に６員環酸無水
物単位を特定量含む（メタ）アクリル系樹脂からなる合
成樹脂シートの少なくとも一面にハードコート層を、さ
らに、少なくとも一面に反射防止膜を形成してなる透光
性プラスチックフィルターが、優れた光学的物性（反射
率、透過率）を備えており、しかも耐熱性、耐候性、表
面硬度に優れているため過酷な環境条件下でも使用可能
であることを見いだし、本発明を完成させるに至った。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
The present inventors have conducted extensive studies on a translucent plastic filter which has excellent heat resistance, weather resistance, and surface hardness and can be used even under harsh environmental conditions. As a result, a specific amount of a 6-membered cyclic anhydride unit in a molecule is specified. A transparent resin filter having a hard coat layer formed on at least one surface of a synthetic resin sheet containing a (meth) acrylic resin and an antireflection film formed on at least one surface thereof has excellent optical properties (reflectance, It has been found that it can be used even under harsh environmental conditions because of its excellent transmittance, heat resistance, weather resistance and surface hardness, and has completed the present invention.
【０００４】[0004]
【課題を解決するための手段】即ち、本発明は、アクリ
ル酸、メタクリル酸、またはこれらのエステルから誘導
される重合体を変性して得られる、分子中に一般式
〔Ｉ〕（化２）That is, the present invention provides a compound represented by the general formula [I] (Chemical Formula 2) in the molecule obtained by modifying a polymer derived from acrylic acid, methacrylic acid, or an ester thereof.
【化２】 （式中、Ｒ1 、Ｒ2 は、同一または相異なり、水素原子
またはアルキル基を表わす。）で示される６員環酸無水
物単位を３〜３０重量％含む（メタ）アクリル系樹脂か
らなる合成樹脂シートの少なくとも一面にハードコート
層が形成され、さらに、該シートの少なくとも一面に反
射防止膜が形成されてなることを特徴とする透光性プラ
スチックフィルターを提供するものである。[Chemical 2] (In the formula, R 1 and R 2 are the same or different and each represent a hydrogen atom or an alkyl group.) A (meth) acrylic resin containing 3 to 30% by weight of a 6-membered cyclic acid anhydride unit The present invention provides a translucent plastic filter characterized in that a hard coat layer is formed on at least one surface of a synthetic resin sheet, and an antireflection film is further formed on at least one surface of the sheet.
【０００５】以下、本発明について詳細に説明する。本
発明に使用される合成樹脂シートの原料となる重合体
は、アクリル酸、メタクリル酸、これらのエステル体、
または酸無水物のそれぞれまたはこれらの混合物を重合
することによって得られる。ここで、エステル単量体と
しては、アクリル酸メチル、アクリル酸エチル、アクリ
ル酸ブチル、メタクリル酸メチル、メタクリル酸エチ
ル、メタクリル酸シクロヘキシル、メタクリル酸ベンジ
ルなどが例示され、これらは混合物として使用されても
よい。また、酸無水物としては、メタクリル酸無水物な
どが挙げられる。The present invention will be described in detail below. The polymer used as the raw material of the synthetic resin sheet used in the present invention is acrylic acid, methacrylic acid, an ester thereof,
Alternatively, it is obtained by polymerizing each of the acid anhydrides or a mixture thereof. Here, examples of the ester monomer include methyl acrylate, ethyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate, cyclohexyl methacrylate, and benzyl methacrylate, and these may be used as a mixture. Good. Examples of the acid anhydride include methacrylic acid anhydride.
【０００６】６員環酸無水物単位〔Ｉ〕は、上記の重合
体を、水酸化ナトリウム、水酸化カリウム、ナトリウム
メチラート等の塩基性化合物の存在下、１５０〜３５０
℃、好ましくは２２０〜３２０℃の範囲で熱処理して変
性することによって得ることができる。６員環酸無水物
単位〔Ｉ〕の式中、Ｒ1 、Ｒ2 は、同一であっても相異
なっていてもよく、水素原子、またはメチル基、エチル
基、プロピル基、イソプロピル基、ブチル基、ｔ−ブチ
ル基、ｓｅｃ−ブチル基、アミル基等の低級アルキル基
を表わす。重合体中の６員環酸無水物単位〔Ｉ〕の含有
量は、耐熱性を向上させ、しかも溶融粘度が高くなり成
形加工に支障をきたすことがない範囲であること望まし
く、通常、３〜３０重量％、好ましくは５〜２５重量％
である。The 6-membered cyclic acid anhydride unit [I] is obtained by mixing the above polymer with 150 to 350 in the presence of a basic compound such as sodium hydroxide, potassium hydroxide or sodium methylate.
It can be obtained by heat-treating at ℃, preferably in the range of 220 to 320 ℃ to modify. In the formula of the 6-membered cyclic acid anhydride unit [I], R 1 and R 2 may be the same or different, and are a hydrogen atom, or a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group. Group, a lower alkyl group such as t-butyl group, sec-butyl group, amyl group and the like. The content of the 6-membered cyclic acid anhydride unit [I] in the polymer is preferably within a range that improves heat resistance and does not hinder the molding process due to high melt viscosity. 30% by weight, preferably 5-25% by weight
Is.
【０００７】６員環酸無水物単位〔Ｉ〕を含有する重合
体は、例えば、一般的に用いられる溶融押出成形などの
方法によりシート化して合成樹脂シートとすることがで
きる。シート化の際には、シートの強度を向上させるた
めに、例えば、ブタジエン系、アクリル系、シリコン系
等のゴム成分などを配合してもよい。The polymer containing the 6-membered cyclic acid anhydride unit [I] can be made into a synthetic resin sheet by sheeting, for example, by a commonly used method such as melt extrusion molding. At the time of forming into a sheet, in order to improve the strength of the sheet, for example, a rubber component such as a butadiene type, an acrylic type or a silicon type may be blended.
【０００８】本発明の透光性プラスチックフィルター
は、かくして得られる合成樹脂シートの少なくとも一面
にハードコート層を、さらに少なくとも一面には反射防
止膜を形成せしめることにより製造することができる。The translucent plastic filter of the present invention can be produced by forming a hard coat layer on at least one surface of the synthetic resin sheet thus obtained and further forming an antireflection film on at least one surface thereof.
【０００９】ハードコート層の形成のために使用される
ハードコート剤としては、例えば、有機珪素系化合物、
エポキシ樹脂、メラミン樹脂等を主成分とする熱硬化性
の架橋性樹脂、１分子中に２個以上の（メタ）アクリロ
イルオキシ基を有する活性エネルギー線硬化性の架橋性
樹脂等が挙げられる。The hard coating agent used for forming the hard coating layer is, for example, an organosilicon compound,
Examples thereof include a thermosetting crosslinkable resin containing an epoxy resin and a melamine resin as main components, and an active energy ray-curable crosslinkable resin having two or more (meth) acryloyloxy groups in one molecule.
【００１０】ハードコート剤の合成樹脂シートへの塗布
方法としては、例えば、スプレー法、ドクターブレード
法、ディッピング法、バーコート法、ロールコート法な
どが挙げられる。形成されるハードコート層の厚みは、
ハードコート性能が維持され、しかも塗膜にクラックを
生じない程度の厚みであることが望ましく、通常、０．
５μｍ〜１５μｍ、好ましくは１μｍ〜１０μｍであ
る。本発明の透光性プラスチックフィルターでは、ハー
ドコート層は少なくとも一面に設ければよく、もちろん
両面に設けてもよい。Examples of the method for applying the hard coat agent to the synthetic resin sheet include a spray method, a doctor blade method, a dipping method, a bar coating method and a roll coating method. The thickness of the hard coat layer formed is
It is desirable that the thickness is such that the hard coat performance is maintained and the coating film is not cracked.
It is 5 μm to 15 μm, preferably 1 μm to 10 μm. In the translucent plastic filter of the present invention, the hard coat layer may be provided on at least one surface, and may be provided on both surfaces.
【００１１】反射防止膜の形成のために使用される化合
物としては、例えば、フッ化カルシウム、フッ化ナトリ
ウム、フッ化リチウム、フッ化マグネシウム、フッ化ラ
ンタン、二酸化珪素、フッ化ネオジウム、フッ化セリウ
ム、酸化アルミニウム、一酸化マグネシウム、酸化トリ
ウム、酸化ランタン、一酸化珪素、酸化イットリウム、
酸化ジルコニウム、酸化チタン、酸化セリウム、硫化亜
鉛、酸化ビスマス、硫化カドミウム、またはこれらの混
合物などが挙げられる。反射防止膜を合成樹脂シート面
に形成せしめる方法としては、例えば、真空蒸着法、ス
パッタリング法などが挙げられる。反射防止膜は、１層
であっても、２層以上の多層であってもよい。Examples of the compound used for forming the antireflection film include calcium fluoride, sodium fluoride, lithium fluoride, magnesium fluoride, lanthanum fluoride, silicon dioxide, neodymium fluoride and cerium fluoride. , Aluminum oxide, magnesium monoxide, thorium oxide, lanthanum oxide, silicon monoxide, yttrium oxide,
Examples thereof include zirconium oxide, titanium oxide, cerium oxide, zinc sulfide, bismuth oxide, cadmium sulfide, or a mixture thereof. Examples of the method for forming the antireflection film on the surface of the synthetic resin sheet include a vacuum vapor deposition method and a sputtering method. The antireflection film may be a single layer or a multilayer of two or more layers.
【００１２】本発明の透光性プラスチックフィルターで
は、通常、片面にのみ反射防止膜を設けたものが使用さ
れるが、反射防止性能をさらに向上せしめるためには、
両面に反射防止膜を設けることが好ましい。また、反射
防止膜は、合成樹脂シートの上に直接形成してもよい
が、特にハードコート層の上に形成されることが、反射
防止膜の密着性が良いために好ましい。さらに、片面に
のみ反射防止膜が形成されている場合には、その裏面に
円偏光膜を貼り合わせてもよい。裏面に円偏光膜を貼り
合わせることにより、表示体自身の反射光をカットする
ことができ、より反射防止性能の優れた透光性プラスチ
ックフィルターを得ることもできる。In the translucent plastic filter of the present invention, a filter provided with an antireflection film on only one surface is usually used, but in order to further improve the antireflection performance,
It is preferable to provide antireflection films on both surfaces. The antireflection film may be directly formed on the synthetic resin sheet, but it is particularly preferably formed on the hard coat layer because of good adhesion of the antireflection film. Further, when the antireflection film is formed only on one surface, a circular polarization film may be attached to the back surface thereof. By attaching a circularly polarizing film to the back surface, it is possible to cut off the reflected light of the display body itself, and it is also possible to obtain a translucent plastic filter having more excellent antireflection performance.
【００１３】[0013]
【発明の効果】本発明の透光性プラスチックフィルター
は、優れた光学的物性（反射率、透過率）を備えてお
り、しかも耐熱性、耐候性、表面硬度に優れているた
め、過酷な環境条件下でも使用可能であり、車載用や屋
外用の液晶ディスプレイ、ＣＲＴディスプレイ、蛍光表
示管ディスプレイ、プラズマディスプレイなどの表示装
置に利用することができる。EFFECTS OF THE INVENTION The translucent plastic filter of the present invention has excellent optical properties (reflectance, transmittance) and is excellent in heat resistance, weather resistance and surface hardness, so that it can be used in harsh environments. It can be used under conditions and can be used for display devices such as in-vehicle or outdoor liquid crystal displays, CRT displays, fluorescent display tubes, and plasma displays.
【００１４】[0014]
【実施例】以下、実施例により本発明をさらに詳細に説
明するが、本発明が実施例により限定されるものではな
いことは言うまでもない。EXAMPLES The present invention will be described in more detail below with reference to examples, but it goes without saying that the present invention is not limited to the examples.
【００１５】なお、透光性プラスチックフィルターの分
析、および物性の測定は次に示す方法により実施した。 (1) ６員環酸無水物単位〔Ｉ〕の定量 赤外分光光度計を用いて、酸無水物構造特有の１８０５
ｃｍ-1の吸収により定量した。 (2) メルトフローインデックス（ＭＩ） ＡＳＴＭ Ｄ−１２３８に準拠して、温度２３０℃、
３．８Ｋｇ荷重で測定した。 (3) 成形品外観 ４０ｍｍ押出機を用いて厚さ０．２ｍｍのシートを作成
し、表面の状態を目視により観察した。 (4) 針侵入温度（耐熱性） 熱分析装置（ＴＭＡ／ＳＳ１２０、セイコ−電子工業
製）を用い、直径１ｍｍの針が、昇温速度：５℃／分、
荷重：５０ｇの条件下で、厚さ０．２ｍｍのシートに
０．１ｍｍの深さまで侵入する時の温度を求めた。 (5) 鉛筆硬度 ＪＩＳ Ｋ５４００に準拠して、荷重：１Ｋｇで測定し
た。 (6) 耐候性 ＳＷＯＭ（スガ試験機製）を用いて、ブラックパネル温
度：６３℃、降雨なしの条件で１０００時間暴露を行
い、黄色度（ＹＩ）をＪＩＳ Ｋ７１０３に準拠して測
定した。 (7) 分光透過率、分光反射率 分光光度計（島津製作所製、ＭＰＳ−２０００型）を用
いて測定した。The analysis of the translucent plastic filter and the measurement of its physical properties were carried out by the following methods. (1) Quantification of 6-membered cyclic acid anhydride unit [I] 1805 peculiar to the acid anhydride structure using an infrared spectrophotometer
It was quantified by the absorption at cm -1 . (2) Melt flow index (MI) According to ASTM D-1238, temperature 230 ° C,
It was measured under a load of 3.8 kg. (3) Appearance of molded product A sheet having a thickness of 0.2 mm was prepared using a 40 mm extruder, and the surface condition was visually observed. (4) Needle penetration temperature (heat resistance) Using a thermal analysis device (TMA / SS120, manufactured by Seiko Denshi Kogyo), a needle with a diameter of 1 mm was heated at a heating rate of 5 ° C / min.
Under a condition of a load of 50 g, the temperature at which the sheet having a thickness of 0.2 mm penetrates to a depth of 0.1 mm was obtained. (5) Pencil hardness Based on JIS K5400, the load was measured at 1 kg. (6) Weather resistance Using a SWOM (manufactured by Suga Test Instruments Co., Ltd.), exposure was performed for 1000 hours under conditions of a black panel temperature of 63 ° C. and no rainfall, and a yellowness index (YI) was measured according to JIS K7103. (7) Spectral transmittance and spectral reflectance Measured with a spectrophotometer (manufactured by Shimadzu Corporation, MPS-2000 type).
【００１６】実施例１ 撹拌機が備わった５Ｌ容のオートクレーブに２．２Ｌの
水、２．４ｇのヒドロキシセルロースを仕込み溶解した
のちに、１６０ｇのメタクリル酸、１４４０ｇのメタク
リル酸メチル、６．４ｇのラウリルメルカプタン、５．
６ｇのラウロイルパーオキサイドを加え、この混合物を
撹拌しながら８０℃に加熱し重合を行った。１時間４０
分後に温度を９８℃に上げ、更に１時間重合を行い重合
を完結させた。その後、重合物を冷却、遠心分離、水洗
して８０℃で乾燥を行い、乾燥ビーズを得た。この乾燥
ビーズ１００部に対して、水酸化ナトリウム０．０３部
をヘンシェルミキサーで混合し、４０ｍｍ脱気押出機
（田辺プラスチック機械製ＶＳ−４０−２８型、Ｌ／Ｄ
＝２８）を用いてスクリュー回転数５０ｒｐｍ、樹脂温
度２８０℃で造粒を行い、６員環酸無水物単位〔Ｉ〕を
含むメタクリル系樹脂を得た。この樹脂中に含まれる６
員環酸無水物単位〔Ｉ〕の含量は７．８重量％であっ
た。この造粒樹脂を２６０℃の樹脂温度で押出成形を行
い厚さ０．２ｍｍのシートを得た。このシートの針侵入
温度を測定した。結果は第１表に示す。このシートの片
面に市販の紫外線硬化型ハードコート剤（コーエイハー
ド Ｍ１０１、広栄化学製）を使用して、厚み６μｍの
ハードコート層を形成させた。さらに、そのハードコー
ト層の上に真空蒸着法により一酸化珪素、酸化チタン、
二酸化珪素からなる３層の反射防止膜を形成させて透光
性プラスチィクフィルターを得た。このフィルターの鉛
筆硬度、および耐候性を表わす黄色度（ＹＩ）の測定結
果を第１表に示す。また、分光透過率と分光反射率を第
１図、および第２図に示す。Example 1 2.2 L of water, 2.4 g of hydroxycellulose were charged and dissolved in a 5 L autoclave equipped with a stirrer, and after dissolution, 160 g of methacrylic acid, 1440 g of methyl methacrylate, 6.4 g of methacrylic acid were used. Lauryl mercaptan, 5.
6 g of lauroyl peroxide was added, and the mixture was heated to 80 ° C. with stirring to carry out polymerization. 1 hour 40
After a minute, the temperature was raised to 98 ° C., and polymerization was further performed for 1 hour to complete the polymerization. Then, the polymer was cooled, centrifuged, washed with water and dried at 80 ° C. to obtain dried beads. To 100 parts of the dried beads, 0.03 part of sodium hydroxide was mixed with a Henschel mixer, and a 40 mm degassing extruder (VS-40-28 type manufactured by Tanabe Plastic Machine Co., L / D) was used.
= 28), the screw rotation speed was 50 rpm, and the resin temperature was 280 ° C. to perform granulation to obtain a methacrylic resin containing a 6-membered cyclic acid anhydride unit [I]. 6 contained in this resin
The content of the member cyclic anhydride unit [I] was 7.8% by weight. This granulated resin was extruded at a resin temperature of 260 ° C. to obtain a sheet having a thickness of 0.2 mm. The needle penetration temperature of this sheet was measured. The results are shown in Table 1. A commercially available UV-curable hard coat agent (Koei Hard M101, manufactured by Koei Kagaku Co., Ltd.) was used on one side of this sheet to form a hard coat layer having a thickness of 6 μm. Further, on the hard coat layer, silicon monoxide, titanium oxide,
A three-layer antireflection film made of silicon dioxide was formed to obtain a translucent plastic filter. Table 1 shows the measurement results of the pencil hardness of this filter and the yellowness index (YI) showing the weather resistance. The spectral transmittance and spectral reflectance are shown in FIGS. 1 and 2.
【００１７】実施例２ メタクリル酸とメタクリル酸メチルの仕込み量を４８０
ｇと１１２０ｇにして実施例１と同様の操作を行い、６
員環酸無水物単位〔Ｉ〕を２３．６％含むシートを得る
以外は実施例１に準拠して透光性プラスチィクフィルタ
ーを製造、分析および物性の測定を行った。結果を第１
表に示す。Example 2 A charging amount of methacrylic acid and methyl methacrylate was set to 480.
g and 1120 g, the same operation as in Example 1 was performed, and 6
A translucent plastic filter was produced, analyzed and measured for physical properties in accordance with Example 1 except that a sheet containing 23.6% of a membered cyclic anhydride unit [I] was obtained. First result
Shown in the table.
【００１８】比較例１ メタクリル酸とメタクリル酸メチルの仕込み量を６４０
ｇと９６０ｇにして実施例１と同様の操作を行い、６員
環酸無水物単位〔Ｉ〕を３２．２％含むシートを得る以
外は実施例１に準拠して透光性プラスチィクフィルター
を製造、分析および物性の測定を行った。結果を第１表
に示す。Comparative Example 1 A charge amount of methacrylic acid and methyl methacrylate was 640.
g and 960 g, and the same operation as in Example 1 was performed to obtain a sheet containing 32.2% of 6-membered acid anhydride unit [I]. Was manufactured, analyzed, and its physical properties were measured. The results are shown in Table 1.
【００１９】比較例２ 市販の厚さ０．２ｍｍのポリカーボネート樹脂製シート
（帝人化成製）を用い、実施例１に準拠してハードコー
ト処理、反射防止処理行って、透光性プラスチィクフィ
ルターを製造、分析および物性の測定を行った。結果を
第１表に示す。Comparative Example 2 Using a commercially available polycarbonate resin sheet having a thickness of 0.2 mm (manufactured by Teijin Kasei), hard coat treatment and antireflection treatment were carried out in accordance with Example 1, and a transparent plastic filter was used. Was manufactured, analyzed, and its physical properties were measured. The results are shown in Table 1.
【００２０】比較例３ 市販のメタクリル樹脂（スミペックスＭＨ、住友化学工
業製）を用い、これをシート化したものに実施例１に準
拠してハードコート処理、反射防止処理行って、透光性
プラスチィクフィルターを製造、分析および物性の測定
を行った。結果を第１表に示す。また、分光透過率と反
射率を第３図、第４図に示す。Comparative Example 3 A commercially available methacrylic resin (SUMIPEX MH, manufactured by Sumitomo Chemical Co., Ltd.) was used, and a sheet of this was subjected to a hard coat treatment and an antireflection treatment in accordance with Example 1 to give a light-transmitting plus property. A tick filter was manufactured, analyzed, and its physical properties were measured. The results are shown in Table 1. The spectral transmittance and reflectance are shown in FIGS. 3 and 4.
【００２１】[0021]
【表１】 [Table 1]
【図１】分光透過率（％）と波長（ｎｍ）との関係を表
わす説明図である。FIG. 1 is an explanatory diagram showing a relationship between spectral transmittance (%) and wavelength (nm).
【図２】分光反射率（％）と波長（ｎｍ）との関係を表
わす説明図である。FIG. 2 is an explanatory diagram showing a relationship between spectral reflectance (%) and wavelength (nm).
【図３】分光透過率（％）と波長（ｎｍ）との関係を表
わす説明図である。FIG. 3 is an explanatory diagram showing a relationship between spectral transmittance (%) and wavelength (nm).
【図４】分光反射率（％）と波長（ｎｍ）との関係を表
わす説明図である。FIG. 4 is an explanatory diagram showing a relationship between spectral reflectance (%) and wavelength (nm).
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０８Ｊ 7/04 Ｌ Ｇ０２Ｂ 1/11 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display location C08J 7/04 L G02B 1/11
Claims (1)
のエステルから誘導される重合体を変性して得られる、
分子中に一般式〔Ｉ〕（化１） 【化１】 （式中、Ｒ1 、Ｒ2 は、同一または相異なり、水素原子
またはアルキル基を表わす。）で示される６員環酸無水
物単位を３〜３０重量％含む（メタ）アクリル系樹脂か
らなる合成樹脂シートの少なくとも一面にハードコート
層が形成され、さらに、該シートの少なくとも一面に反
射防止膜が形成されてなることを特徴とする透光性プラ
スチックフィルター。1. Obtained by modifying a polymer derived from acrylic acid, methacrylic acid, or an ester thereof.
In the molecule, the compound represented by the general formula [I] (Chemical formula 1) (In the formula, R 1 and R 2 are the same or different and each represent a hydrogen atom or an alkyl group.) A (meth) acrylic resin containing 3 to 30% by weight of a 6-membered cyclic acid anhydride unit A translucent plastic filter comprising a synthetic resin sheet having a hard coat layer formed on at least one surface thereof, and an antireflection film formed on at least one surface of the synthetic resin sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6061017A JPH07268036A (en) | 1994-03-30 | 1994-03-30 | Light-transmitting plastic filter with heat resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6061017A JPH07268036A (en) | 1994-03-30 | 1994-03-30 | Light-transmitting plastic filter with heat resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07268036A true JPH07268036A (en) | 1995-10-17 |
Family
ID=13159141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6061017A Pending JPH07268036A (en) | 1994-03-30 | 1994-03-30 | Light-transmitting plastic filter with heat resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07268036A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999047571A1 (en) * | 1998-03-17 | 1999-09-23 | Clariant International Ltd. | Light-absorbing polymers and application thereof to antireflection film |
| US6306520B1 (en) | 1997-12-25 | 2001-10-23 | Sumitomo Chemical Company, Limited | Laminated film or sheet process for producing same and laminated structure formed using same |
| WO2003055679A1 (en) * | 2001-12-26 | 2003-07-10 | Tdk Corporation | Article having composite hard coat layer and method for forming composite hard coat layer |
| JP2003260761A (en) * | 2001-12-26 | 2003-09-16 | Tdk Corp | Article having composite hard coat layer, and forming method for composite hard coat layer |
| WO2005105918A1 (en) * | 2004-04-28 | 2005-11-10 | Toray Industries, Inc. | Acrylic resin films and process for producing the same |
| JP2005325343A (en) * | 2004-04-16 | 2005-11-24 | Toray Ind Inc | Resin molded product |
| JP2008101216A (en) * | 2002-05-31 | 2008-05-01 | Toray Ind Inc | Optical guide plate |
| JP2008123662A (en) * | 2002-05-31 | 2008-05-29 | Toray Ind Inc | Optical disk |
-
1994
- 1994-03-30 JP JP6061017A patent/JPH07268036A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6306520B1 (en) | 1997-12-25 | 2001-10-23 | Sumitomo Chemical Company, Limited | Laminated film or sheet process for producing same and laminated structure formed using same |
| WO1999047571A1 (en) * | 1998-03-17 | 1999-09-23 | Clariant International Ltd. | Light-absorbing polymers and application thereof to antireflection film |
| WO2003055679A1 (en) * | 2001-12-26 | 2003-07-10 | Tdk Corporation | Article having composite hard coat layer and method for forming composite hard coat layer |
| JP2003260761A (en) * | 2001-12-26 | 2003-09-16 | Tdk Corp | Article having composite hard coat layer, and forming method for composite hard coat layer |
| US7452609B2 (en) | 2001-12-26 | 2008-11-18 | Tdk Corporation | Article having composite hard coat layer and method for forming composite hard coat layer |
| JP2008101216A (en) * | 2002-05-31 | 2008-05-01 | Toray Ind Inc | Optical guide plate |
| JP2008123662A (en) * | 2002-05-31 | 2008-05-29 | Toray Ind Inc | Optical disk |
| JP4656123B2 (en) * | 2002-05-31 | 2011-03-23 | 東レ株式会社 | optical disk |
| JP2005325343A (en) * | 2004-04-16 | 2005-11-24 | Toray Ind Inc | Resin molded product |
| WO2005105918A1 (en) * | 2004-04-28 | 2005-11-10 | Toray Industries, Inc. | Acrylic resin films and process for producing the same |
| JPWO2005105918A1 (en) * | 2004-04-28 | 2008-03-13 | 東レ株式会社 | Acrylic resin film and manufacturing method |
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