JP2001343529A - Protective film for polarizer and its manufacturing method - Google Patents

Protective film for polarizer and its manufacturing method

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Publication number
JP2001343529A
JP2001343529A JP2001093827A JP2001093827A JP2001343529A JP 2001343529 A JP2001343529 A JP 2001343529A JP 2001093827 A JP2001093827 A JP 2001093827A JP 2001093827 A JP2001093827 A JP 2001093827A JP 2001343529 A JP2001343529 A JP 2001343529A
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Prior art keywords
protective film
polarizer protective
film
substituted
resin
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JP2001093827A
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Japanese (ja)
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Hirosuke Kawabata
裕輔 川端
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Kanegafuchi Chem Ind Co Ltd
鐘淵化学工業株式会社
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Priority to JP2000-94903 priority
Application filed by Kanegafuchi Chem Ind Co Ltd, 鐘淵化学工業株式会社 filed Critical Kanegafuchi Chem Ind Co Ltd
Priority to JP2001093827A priority patent/JP2001343529A/en
Publication of JP2001343529A publication Critical patent/JP2001343529A/en
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Abstract

PROBLEM TO BE SOLVED: To manufacture a protective film for polarizer having an extremely small phase difference between film surface direction and a thickness direction and having a moisture vapor permeation rate suited for the protective film for the polarizer. SOLUTION: The protective film for polarizer comprises a resin film containing a thermoplastic resin with a substituted or nonsubstituted image group on a side chain (A) and a thermoplastic resin with a substituted or nonsubstituted phenyl group and a nitrile group on a side chain (B).

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は、偏光子保護フィルムおよびその製造方法に関する。 The present invention relates to relates to a polarizer protective film and a manufacturing method thereof.

【0002】 [0002]

【従来の技術】近年、ノート型パソコン、ワードプロセッサ、携帯電話、携帯情報端末等の小型化・薄型化・軽量化にともない、これらの電子機器に軽量・コンパクトという特長を生かした液晶表示装置が多く用いられるようになってきている。 In recent years, a notebook computer, a word processor, a mobile phone, along with the smaller and thinner and lighter, such as a mobile information terminal, the liquid crystal display device utilizing the features of light weight and compact in many of these electronic devices it has become so used to. 液晶表示装置には、その表示品位を保つために偏光フィルム等の各種フィルムが用いられている。 The liquid crystal display device, and various films such as a polarizing film is used to keep the display quality. また、携帯情報端末や携帯電話向けに液晶表示装置を更に軽量化するため、ガラス基板の代わりにプラスチックフィルムを用いた液晶表示装置も実用化されている。 Further, in order to further reduce the weight of the liquid crystal display device in a portable information terminal or mobile phones, liquid crystal display device using the plastic film in place of the glass substrate has been put into practical use.

【0003】液晶表示装置の様に偏光を取り扱う装置に用いるプラスチックフィルムには、光学的に透明である他に光学的な均質性が求められる。 [0003] a plastic film used in the device for handling polarization as the liquid crystal display device, optical homogeneity is required in addition is optically transparent. 更に、ガラス基板をプラスチックフィルムに代えたプラスチック液晶表示装置用のフィルム基板は、複屈折と厚みの積で表される位相差が小さいことが望まれ、更に外部応力などによる位相差の変化が起こりにくいことも要求される。 Furthermore, the film substrate for plastic liquid crystal display device was replaced by a glass substrate to a plastic film, is desirable retardation represented by the product of birefringence and thickness is small, occur a change in retardation due to further external stress hard to is also required. 特にプラスチックフィルムを偏光子保護フィルムとして用いる場合は、広視野角化、大画面化のため上記のような特性が強く求められる。 In particular, in the case of using a plastic film as a polarizer protective film, wide viewing angle, the characteristics as described above for the large screen is strongly demanded. また、各種液晶表示装置用光学フィルムへの応用の際にも、加工あるいは使用時の応力による位相差の変化が小さいことが求められる。 Further, various when also the liquid crystal display device for application to optical films, that the change in the phase difference is small is determined by stress during processing or use.

【0004】液晶表示装置に用いられるプラスチックフィルムとして、ポリカーボネート、ポリアリレート、ポリスルホン、ポリエーテルスルホン等のエンジニアリングプラスチックスや、トリアセチルセルロース等のセルロース類のプラスチックからなるフィルムが知られている。 [0004] As the plastic film to be used for the liquid crystal display device, polycarbonate, polyarylate, polysulfone, and engineering plastics such as polyether sulfone, a film of plastic cellulose such as triacetyl cellulose is known. これらプラスチックフィルムを製造する場合、プラスチックの溶融流動・溶剤乾燥収縮・熱収縮や搬送応力等により成形中のフィルムに各種応力がかかり、得られるフィルムには、応力により誘起される分子配向に起因する位相差が残存する。 When manufacturing these plastic films, it takes various stresses in the film during forming by melt flow and solvent drying shrinkage, heat shrinkage and conveying stress or the like of plastics, the resulting film due to the molecular orientation induced by stress phase difference remains. そのため必要に応じ熱アニール等のフィルムに対する特別な処理を施し残存する位相差を低減させなければならず製造工程が煩雑になるなどの問題がある。 Manufacturing process must reduce the phase difference subjected to special processing residual to the film of heat such as annealing as required for it is a problem such as complicated. 更に残存する位相差を低減させたフィルムも、偏光子との貼合せ加工時の変形や偏光板とした後の変形の応力により引き起こされる分子の配向により新たな位相差を生じるため、品質の安定性上問題となる。 Further reduce the phase difference remaining film also, to produce a new phase difference by the orientation of the molecules caused by the stress of the lamination during machining deformation and deformation after the polarizing plate of the polarizer, stable quality the sex on the problem.

【0005】これらの問題を解決するため、より分極の小さい、すなわち、分子の配向による位相差が発現しにくいプラスチックフィルムを得ることが試みられており、シクロオレフィン系フィルムや、マレイミド成分を有するオレフィン系フィルムが提案されている。 To solve these problems, small more polarization, that is, it has been attempted that a phase difference to obtain a hard plastic film expression due to the orientation of the molecules, and cycloolefin based film, an olefin having a maleimide component system film has been proposed.

【0006】 [0006]

【発明が解決しようとする課題】しかしながら上記シクロオレフィン系フィルムや、マレイミド成分を有するオレフィン系フィルムは、フィルム平面については、分子の配向による位相差が発現しにくいが、フィルム厚み方向については位相差を生じ易いという問題があり、光学的な均質性が強く求められる偏光子保護フィルムとしては不適であった。 And however the cycloolefin film [0005], olefin-based film having a maleimide component, for the film plane is difficult to express the phase difference due to the orientation of the molecules, the phase difference for the film thickness direction There is a problem easily occurs, was unsuitable as a polarizer protective film optical homogeneity it is strongly demanded.

【0007】また、特にシクロオレフィン系樹脂は、偏光子保護フィルムとして一般的な厚み(50〜90μ [0007] In particular cycloolefin resin, the general thickness as a polarizer protective film (50~90Myu
m)のフィルムに成形すると、その水蒸気透過度は、4 When formed into a film of m), its water vapor permeability, 4
0℃、90%RHにおいて、10g/(m 2・24h 0 ° C., at 90% RH, 10g / (m 2 · 24h
r)未満と極めて低く、偏光子と偏光子保護フィルムの接着不良が問題となっていた。 r) less than the very low, poor adhesion of the polarizer and the polarizer protective film has been a problem. すなわち偏光板を製造する際、偏光子の両面に偏光子保護フィルムが接着剤を介し貼り合わされるが、主に水系の接着剤が使用されているため、偏光子保護フィルムの水蒸気透過度が低すぎると乾燥が不充分となり、接着不良を生じていた。 That when producing a polarizing plate, although the polarizer protective film on both surfaces of a polarizer is bonded via an adhesive, mostly for the adhesive aqueous is used, a low water vapor permeability of the polarizer protective film too and the drying becomes insufficient, it had resulted in poor adhesion. 一方、 on the other hand,
従来偏光子保護フィルムとして一般的に用いられるトリアセチルセルロース系フィルム(80μm厚)は、水蒸気透過度が、40℃、90%RHにおいて、250g/ Triacetyl cellulose film generally used as a conventional polarizer protective film (80 [mu] m thick) is water vapor permeability, 40 ° C., in 90% RH, 250 g /
(m 2・24hr)程度と大きく、接着性は問題ないが、貼合後の外部からの水蒸気の透過を抑制できず、偏光板の長期における耐久性の低下を招く。 (M 2 · 24hr) extent as large, although no problem adhesion can not suppress permeation of water vapor from the outside after bonding, deteriorating the durability in long-term polarizing plate.

【0008】従って本発明が解決しようとする課題は、 [0008] Therefore, an object of the present invention is to provide,
フィルムの平面方向、厚み方向ともに位相差が小さく光学的均質性に優れ、かつ偏光子との接着に適した水蒸気透過度を有する偏光子保護フィルムの提供である。 Plane direction of the film, excellent in the phase difference is smaller optical homogeneity in the thickness direction both and the provision of a polarizer protective film having a water vapor transmission rate that is suitable for adhesion to a polarizer.

【0009】 [0009]

【課題を解決するための手段】上記課題を解決するため、本発明者等は鋭意研究した。 To solve the above object, according to an aspect of, the present inventors have intensively studied. その結果、特定の組成の樹脂組成物からなる偏光子保護フィルムが、偏光子との接着に好適な水蒸気透過度を有し、しかもフィルムの平面方向と厚み方向の位相差が極めて小さいことを見いだし本発明に至った。 As a result, it found that the polarizer protective film comprising the resin composition of the specific composition, have a suitable water vapor permeability for bonding the polarizer, moreover retardation in the plane direction and the thickness direction of the film is extremely small We have completed the present invention.

【0010】すなわち、本発明は、(A)側鎖に置換または非置換イミド基を有する熱可塑性樹脂、および(B)側鎖に置換または非置換フェニル基とニトリル基を有する熱可塑性樹脂を含有する樹脂組成物からなるフィルムであって、40℃、90%RHにおける水蒸気透過度が、10〜200g/(m 2・24hr)であることを特徴とする偏光子保護フィルムを提供する。 [0010] Namely, the present invention may contain a thermoplastic resin having a thermoplastic resin, and (B) side chain substituted or unsubstituted phenyl group and a nitrile group with a substituted or unsubstituted imide group in (A) side chain to a film comprising the resin composition, 40 ° C., the water vapor permeability at 90% RH, to provide a polarizer protective film, which is a 10~200g / (m 2 · 24hr) .

【0011】好ましくは、本発明の偏光子保護フィルムの平面方向の位相差は20nm以下であり、また、好ましくは、厚み方向の位相差は100nm以下である。 [0011] Preferably, the retardation in the plane direction of the polarizer protective film of the present invention is 20nm or less, also preferably, the thickness direction retardation is 100nm or less.

【0012】また、(A)の熱可塑性樹脂は、好ましくは、下記式(1)で表される繰り返し単位と下記式(2)で表される繰り返し単位を含有する。 Further, the thermoplastic resin (A) preferably contains a repeating unit and a repeating unit represented by the following formula (2) represented by the following formula (1).

【0013】 [0013]

【化3】 [Formula 3] (ここで、R 1 、R 2およびR 3は、それぞれ独立に、 (Wherein, R 1, R 2 and R 3 are each independently,
水素または炭素数1〜8のアルキル基を示す。 It represents hydrogen or an alkyl group having 1 to 8 carbon atoms. )

【0014】 [0014]

【化4】 [Of 4] (ここで、Rは、炭素数1〜18のアルキル基、または炭素数3〜12のシクロアルキル基を示す。) 一方、(B)の熱可塑性樹脂は、好ましくは、置換または非置換スチレン単位と、置換または非置換アクリロニトリル単位を含有する。 (Wherein, R represents an alkyl group having 1 to 18 carbon atoms or. A cycloalkyl group having 3 to 12 carbon atoms,) whereas, thermoplastic resin (B) is preferably a substituted or unsubstituted styrene units If, containing substituted or non-substituted acrylonitrile units. ここで、(B)の熱可塑性樹脂における好ましい置換または非置換スチレン単位の含有率は50重量%以上80重量%以下であり、置換または非置換アクリロニトリル単位の好ましい含有率は20重量%以上50重量%以下である。 The thermal content of the preferred substituted or unsubstituted styrene units in the thermoplastic resin is 80 wt% or less than 50 wt%, preferably the content of 20 wt% to 50 wt substituted or unsubstituted acrylonitrile units (B) % or less.

【0015】さらに、また、前記樹脂組成物中の(A) Furthermore, also, of the resin composition (A)
の熱可塑性樹脂の含有率は、好ましくは、60重量%以上90重量%以下である。 The content of the thermoplastic resin is preferably 60 wt% or more and 90 wt% or less.

【0016】一方、樹脂組成物中の(B)の熱可塑性樹脂の含有率は、好ましくは10重量%以上40重量%以下である。 [0016] On the other hand, the content of the thermoplastic resin in the resin composition (B) is preferably 40 wt% 10 wt% or more or less.

【0017】さらにまた、本発明の偏光子保護フィルムは、その一実施態様として、無機粒子または有機粒子の少なくとも一方を含有する。 [0017] Further, the polarizer protective film of the present invention, as its one embodiment, contains at least one of inorganic or organic particles.

【0018】さらにまた、本発明の偏光子保護フィルムは、その一実施態様として、紫外線吸収剤を含有する。 [0018] Further, the polarizer protective film of the present invention, as its one embodiment, contains an ultraviolet absorber.

【0019】さらにまた、本発明の偏光子保護フィルムは、厚みが20〜200μmであることが好ましい。 [0019] Further, the polarizer protective film of the present invention preferably has a thickness of 20 to 200 [mu] m.

【0020】さらにまた、本発明は、他の側面において、(A)側鎖に置換または非置換イミド基を有する熱可塑性樹脂、(B)側鎖に置換または非置換フェニル基とニトリル基を有する熱可塑性樹脂、および溶剤、を含有する樹脂溶液を乾燥後のフィルム厚みが20〜200 [0020] Furthermore, the present invention provides, in another aspect, comprises a thermoplastic resin, a substituted or unsubstituted phenyl group and nitrile group in (B) side chain having a substituted or unsubstituted imide group in (A) side chain thermoplastic resins, and a solvent, the film thickness after the resin solution dried containing 20 to 200
μmとなるように支持体に流延する工程と、該樹脂溶液を乾燥させる工程を含む偏光子保護フィルムの製造方法を提供する。 Providing a step of casting the support so that the [mu] m, the manufacturing method of the polarizer protective film comprising the step of drying the resin solution.

【0021】 [0021]

【発明の実施の形態】本発明の偏光子保護フィルムは、 The polarizer protective film of the embodiment of the present invention is,
(A)側鎖に置換または非置換イミド基を有する熱可塑性樹脂、および(B)側鎖に置換または非置換フェニル基とニトリル基を有する熱可塑性樹脂を含有する樹脂組成物から作られる。 (A) made from a resin composition containing a thermoplastic resin having a thermoplastic resin, and (B) side chain substituted or unsubstituted phenyl group and a nitrile group with a substituted or unsubstituted imide group on the side chain.

【0022】本発明に用いられる熱可塑性樹脂(A) [0022] The thermoplastic resin used in the present invention (A)
は、好ましくは、少なくとも1種のオレフィン(アルケン)から誘導される繰り返し単位と少なくとも1種の置換あるいは非置換マレイミド構造を有する繰り返し単位とを含有する共重合体(二元もしくはそれ以上の多元共重合体)である。 Is preferably a copolymer containing a repeating unit having at least one substituted or non-substituted maleimide structure and repeat units derived from at least one olefin (alkene) (two or more multi-component it is a polymer). 特に好ましくは、熱可塑性樹脂(A) Particularly preferably, the thermoplastic resin (A)
は、下記式(1)で表される繰り返し単位と下記式(2)で表される繰り返し単位を含有する。 Contains a repeating unit and a repeating unit represented by the following formula (2) represented by the following formula (1).

【0023】 [0023]

【化5】 [Of 5] (ここで、R 1 、R 2およびR 3は、それぞれ独立に、 (Wherein, R 1, R 2 and R 3 are each independently,
水素または炭素数1〜8のアルキル基を示す。 It represents hydrogen or an alkyl group having 1 to 8 carbon atoms. )

【0024】 [0024]

【化6】 [Omitted] (ここで、Rは、水素、炭素数1〜18のアルキル基、 (Wherein, R represents hydrogen, an alkyl group having 1 to 18 carbon atoms,
または炭素数3〜12のシクロアルキル基を示す。 Or a cycloalkyl group having 3 to 12 carbon atoms. ) 式(1)の繰り返し単位(オレフィン単位)を提供するオレフィンは、下記式(3): ) Repeating units of the formula (1) (olefin represented by the following formula to provide olefin units) (3):

【0025】 [0025]

【化7】 [Omitted] (ここで、R 1 、R 2およびR 3は、式(1)に同じ。)で表される。 (Wherein, R 1, R 2 and R 3 are the same. In equation (1)) represented by. そのようなオレフィンの好ましい例を挙げると、イソブテン、2−メチル−1−ブテン、2 And preferred examples of such olefins, isobutene, 2-methyl-1-butene, 2
−メチル−1−ペンテン、2−メチル−1−ヘキセン、 - methyl-1-pentene, 2-methyl-1-hexene,
2−メチル−1−ヘプテン、1−イソオクテン、2−メチル−1−オクテン、2−エチル−1−ペンテン、2− 2-methyl-1-heptene, 1-isooctene, 2-methyl-1-octene, 2-ethyl-1-pentene, 2-
エチル−2−ブテン、2−メチル−2−ペンテン、2− Ethyl-2-butene, 2-methyl-2-pentene, 2-
メチル−2−ヘキセン等である。 Methyl-2-hexene. これらオレフィンは、 These olefins,
単独で、あるいは2種以上組合せて用いることができる。 Alone or may be used in combination of two or more.

【0026】上記式(2)の繰り返し単位(マレイミド単位)は、対応するマレイミド化合物から誘導することができる。 The repeating unit (maleimide units) of the above formula (2) can be derived from the corresponding maleimide compound. そのようなマレイミド化合物は、下記式(4): Such maleimide compound is represented by the following formula (4):

【0027】 [0027]

【化8】 [Of 8] (ここで、Rは、式(2)に同じ。)で表される。 (Wherein, R represents the same. In equation (2)) represented by. そのようなマレイミド化合物の好ましい例を挙げると、マレイミド、並びにN−メチルマレイミド、N−エチルマレイミド、N−n−プロピルマレイミド、N−i−プロピルマレイミド、N−n−ブチルマレイミド、N−i−ブチルマレイミド、N−s−ブチルマレイミド、N−t− And preferred examples of such maleimide compounds include maleimide, and N- methyl maleimide, N- ethylmaleimide, N-n-propyl maleimide, N-i-propyl maleimide, N-n-butyl maleimide, N-i- butyl maleimide, N-s- butyl maleimide, N-t-
ブチルマレイミド、N−n−ペンチルマレイミド、N− Butyl maleimide, N-n-pentyl maleimide, N-
n−ヘキシルマレイミド、N−n−ヘプチルマレイミド、N−n−オクチルマレイミド、N−ラウリルマレイミド、N−ステアリルマレイミド、N−シクロプロピルマレイミド、N−シクロブチルマレイミド、N−シクロペンチルマレイミド、N−シクロヘキシルマレイミド、 n- hexyl maleimide, N-n- heptyl-maleimide, N-n- octyl maleimide, N- lauryl maleimide, N- stearyl maleimide, N- cyclopropyl maleimide, N- cyclobutyl maleimide, N- cyclopentyl maleimide, N- cyclohexyl maleimide ,
N−シクロヘプチルマレイミド、N−シクロオクチルマレイミド等のN−置換マレイミドである。 N- cycloheptyl maleimide, N- substituted maleimides such as N- cyclooctyl maleimide. これらマレイミド化合物は、単独で、または2種以上を組み合わせて用いることができる。 These maleimide compounds may be used alone or in combination of two or more. マレイミド化合物としては、N− The maleimide compound, N-
置換マレイミド(式(4)において、Rが水素以外の基)が特に好ましい。 (In the formula (4), the group R is other than hydrogen) substituted maleimide is particularly preferred.

【0028】本発明の熱可塑性樹脂(A)は、上記オレフィンとマレイミド化合物とをそれ自体既知の重合方法により重合させることにより製造することができる。 [0028] Thermoplastic resin (A) of the present invention can be produced by polymerizing in itself known polymerization methods and the olefin and maleimide compounds. この重合には、グラフト重合も含まれる。 The polymerization also includes a graft polymerization. あるいは、本発明の熱可塑性樹脂(A)は、上記オレフィンと無水マレイン酸とを常法に従って重合させて前駆重合体を製造し、これにアミン化合物を反応させて前駆重合体の無水マレイン酸部位をイミド化させることによっても製造することができる。 Alternatively, the thermoplastic resin (A) of the present invention, the olefin and the maleic anhydride is polymerized in a conventional manner to produce a precursor polymer, which is reacted with an amine compound precursor polymer maleic acid sites the can also be prepared by imidization. その場合に使用するアミン化合物としては、上記式(2)のマレイミド単位におけるイミド部位に対応するアミンが含まれ、より具体的には、式R− The amine compound used in that case, the equation (2) contains amine corresponding to the imide site in the maleimide units, more specifically, formula R-
NH 2 (ただし、Rは、式(2)に同じ。)で表されるアミン化合物、例えばメチルアミン、エチルアミン、n NH 2 (wherein, R is the same. In equation (2)) amine compounds represented by, for example methylamine, ethylamine, n
−プロピルアミン、i−プロピルアミン、n−ブチルアミン、s−ブチルアミン、t−ブチルアミン、シクロヘキシルアミン等のアルキルアミンやアンモニアの他、ジメチル尿素、ジエチル尿素等を好ましく例示することができる。 - propylamine, i- propylamine, n- butylamine, s- butylamine, t-butylamine, other alkylamines or ammonia, such as cyclohexylamine, dimethyl urea, can be preferably exemplified diethyl urea. この場合にも、上記式(1)の繰り返し単位と式(2)の繰り返し単位を有する共重合体が得られる。 In this case, a copolymer having repeating units and repeating units of formula (2) of the above formula (1) is obtained.

【0029】本発明の熱可塑性共重合体(A)は、上記オレフィン単位とマレイミド単位以外に、第3成分として、他の共重合性単量体を1種以上含有することができる。 The thermoplastic copolymer (A) of the present invention, in addition to the olefin units and maleimide units, as a third component, the other copolymerizable monomers may contain one or more. そのような共重合性単量体には、アクリル酸メチルやアクリル酸ブチルのようなアクリル酸エステル単量体、メタクリル酸メチルやメタクリル酸シクロヘキシルのようなメタクリル酸エステル単量体、酢酸ビニル等のビニルエステル単量体、メチルビニルエーテルのようなビニルエーテル単量体等のビニル単量体、並びに無水マレイン酸のような不飽和二重結合を有する酸無水物等が含まれる。 Such copolymerizable monomers include acrylic acid ester monomers such as methyl or butyl acrylate, acrylic acid, methacrylic acid ester monomers such as methyl methacrylate and cyclohexyl methacrylate, vinyl acetate vinyl ester monomers include vinyl monomers vinyl ether monomers such as methyl vinyl ether, and acid anhydrides having an unsaturated double bond such as maleic anhydride. これら第3成分は、2種以上を組み合わせて用いることができる。 These third components may be used in combination of two or more. 第3成分を光学的特性を損なわない程度に含有させることにより、熱可塑性共重合体(A)の耐熱性を向上させたり、機械的強度を増大させたりすることができる。 By incorporating a third component to an extent not to impair the optical properties, or to improve the heat resistance of the thermoplastic copolymer (A), or can increase the mechanical strength.

【0030】本発明の熱可塑性共重合体(A)は、ランダム共重合体、ブロック共重合体、グラフト共重合体、 The thermoplastic copolymer (A) of the present invention, random copolymers, block copolymers, graft copolymers,
交互共重合体のいずれであってもよいが、交互共重合体であることが好ましい。 It may be any of alternating copolymer, but is preferably an alternating copolymer. 本発明の熱可塑性共重合体(A)は、より好ましくは、マレイミド単位として、式(2)におけるRがメチル基、エチル基、イソプロピル基およびシクロヘキシル基から選ばれたアルキル基である少なくとも1種のマレイミド単位を含有し、オレフィン単位として、式(1)におけるR 1が水素であり、R Thermoplastic copolymer (A) of the invention, more preferably, a maleimide unit, at least one R in formula (2) is a methyl group, an ethyl group, an alkyl group selected from isopropyl and cyclohexyl groups of containing maleimide units, as olefin units, R 1 is hydrogen in the formula (1), R
2およびR 3がそれぞれメチル基である少なくとも1種のオレフィン単位を含有する共重合体である。 2 and R 3 are each methyl groups is a copolymer containing at least one olefin units. さらに好ましくは、本発明の熱可塑性共重合体(A)は、マレイミド単位としてN−メチルマレイミド単位を含有し、オレフィン単位としてイソブチレン単位を含有する。 More preferably, the thermoplastic copolymer (A) of the present invention contains N- methylmaleimide units as maleimide units, containing isobutylene units as olefin units. 本発明の熱可塑性共重合体(A)は、N−置換マレイミドとイソブテンとの交互共重合体であることが特に好ましい。 Thermoplastic copolymer (A) of the present invention is particularly preferably an alternating copolymer of N- substituted maleimide and isobutene.

【0031】本発明の熱可塑性共重合体(A)において、マレイミド単位の含有率は、30モル%以上80モル%未満であることが好ましい。 [0031] In the thermoplastic copolymer of the present invention (A), the content of the maleimide units is preferably less than 30 mol% to 80 mol%. マレイミド単位の含有率がこの範囲を逸脱すると、得られるフィルムの耐熱性や機械的強度が損なわれるおそれがある。 If the content of the maleimide units is outside this range, there is a possibility that heat resistance and mechanical strength of the resulting film is impaired. マレイミド単位の含有率は、より好ましくは、40モル%以上60モル%以下である。 The content of maleimide units is more preferably 60 mol% or less than 40 mol%. 第3成分は、これを添加する場合には、その含有率が5モル%以上30モル%以下であることが好ましい。 The third component, if the addition of this, it is preferable that the content is not more than 5 mol% to 30 mol%. 熱可塑性共重合体(A)の残りは、オレフィン単位である。 The remaining thermoplastic copolymer (A) is an olefin unit. 本発明の熱可塑性共重合体(A) Thermoplastic copolymer of the present invention (A)
は、マレイミド単位とオレフィン単位とを主成分(好ましくは、マレイミド単位とオレフィン単位との合計が、 Is a maleimide units and olefin units main component (preferably, the sum of the maleimide units and olefin units,
熱可塑性共重合体(A)の70モル%以上)として含むことが特に好ましい。 It is particularly preferred to include a thermoplastic copolymer (A) 70 mole% or more). また、本発明の熱可塑性共重合体(A)は、1×10 4以上5×10 5以下の重量平均分子量を有することが好ましい。 The thermoplastic copolymer (A) of the present invention preferably has a weight average molecular weight of 5 × 10 5 or less 1 × 10 4 or more.

【0032】さらに、本発明の熱可塑性共重合体(A) Furthermore, a thermoplastic copolymer of the present invention (A)
は、ガラス転移温度が好ましくは80℃以上、より好ましくは100℃以上、さらに好ましくは130℃以上であるような耐熱性を示すことが好ましい。 Has a glass transition temperature of preferably 80 ° C. or higher, more preferably 100 ° C. or higher, more preferably preferably exhibits heat resistance such that 130 ° C. or higher.

【0033】本発明のオレフィン−マレイミド共重合体は、既述のようにそれ自体既知の方法で製造することができ、例えば特開平5−59193号公報、特開平5− The olefin of the present invention - maleimide copolymer, as described above can be prepared in a manner known per se, for example JP-5-59193 and JP Hei 5-
195801号公報、特開平6−136058号公報および特開平9−328523号公報に記載されているように、オレフィンとマレイミド化合物とを直接共重合させたり、その一方の重合体に他方をグラフト共重合したり、あるいは前述した前駆重合体に対してアミン化合物を反応させてイミド結合を導入することによって製造することができる。 195801 JP, as described in JP-A-6-136058 and JP-A-9-328523 and JP-or by direct copolymerization of an olefin and a maleimide compound, graft copolymerization and the other to the polymer one of its or, or it can be reacted with an amine compound with respect to the above-mentioned precursor polymer is prepared by introducing imide bond.

【0034】次に、本発明に用いられる熱可塑性樹脂(B)は、好ましくは、不飽和ニトリル化合物から誘導される繰り返し単位(ニトリル単位)とスチレン系化合物から誘導される繰り返し単位(スチレン系単位)とを含む共重合体(二元もしくは以上の多元共重合体)である。 Next, the thermoplastic resin (B) used in the present invention is preferably a repeating unit (styrenic units derived repeating unit (nitrile units) derived from an unsaturated nitrile compound from a styrene compound ) and a copolymer (two or more multicomponent copolymer) containing.

【0035】上記の好ましい共重合体(B)を構成する不飽和ニトリル化合物の好ましい例を挙げると、アクリロニトリルやメタクリロニトリルのようなα−置換不飽和ニトリル、フマロニトリルのようなα,β−二置換オレフィン性不飽和結合を有するニトリル化合物である。 A preferred way of example, alpha-substituted unsaturated nitriles such as acrylonitrile and methacrylonitrile unsaturated nitrile compound constituting the above preferred copolymer (B), such as fumaronitrile alpha, beta-two a nitrile compound having a substituted olefinically unsaturated bond.

【0036】上記の好ましい共重合体(B)を構成するスチレン系化合物としては、スチレン、ビニルトルエン、メトキシスチレンまたはクロロスチレン等の非置換または置換スチレン系化合物や、α−メチルスチレン等のα−置換スチレン系化合物を用いることができる。 Examples of the styrene compound to constitute the above preferred copolymer (B), styrene, vinyl toluene, unsubstituted or substituted styrene compounds, such as methoxystyrene or chlorostyrene or, alpha-methyl styrene, etc. alpha- it can be used substituted styrene compounds.

【0037】本発明の熱可塑性共重合体(B)は、上記ニトリル単位とスチレン系単位以外に、第3成分として、他の共重合性単量体を含有していてもかまわない。 The thermoplastic copolymer (B) of the present invention, in addition to the nitrile unit and a styrene unit, as a third component, may also contain other copolymerizable monomers.
そのような第3成分には、好ましくは、ブチルアクリレート等のアクリル系単量体、エチレンやプロピレン等のオレフィン系単量体が含まれ、これら単量体を1種または2種以上を共重合させることにより、得られたフィルムの可撓性を向上させることができる。 Such third component, preferably, acrylic monomers such as butyl acrylate, olefinic monomers such as ethylene and propylene include, copolymerizing one or more kinds of these monomers by, it is possible to improve the flexibility of the resulting film. また、第3成分としては、N−置換マレイミドを用いることもでき、このN−置換マレイミド、特にフェニルマレイミドを共重合成分として用いることにより、当該共重合体の耐熱性を向上させることができる。 As the third component, can also be used N- substituted maleimide, the N- substituted maleimide, in particular by using phenylmaleimide as a copolymerization component, it is possible to improve the heat resistance of the copolymer.

【0038】本発明の熱可塑性共重合体(B)は、これら単量体を直接共重合させることにより得られるが、スチレン系化合物の重合体および不飽和ニトリル化合物の重合体の一方に、他方をグラフト共重合させてもよい。 The thermoplastic copolymer (B) of the present invention, the is obtained by direct copolymerization of these monomers, one of the polymer of the polymer and the unsaturated nitrile compound of a styrene compound, and the other the may be graft copolymerized.
また、ゴム弾性を有するアクリル系重合体にスチレン系化合物および不飽和ニトリル系化合物をグラフト重合させることにより好ましい共重合体を得ることができる。 Further, it is possible to obtain the preferred copolymers by graft-polymerizing a styrene compound and an unsaturated nitrile compound in the acrylic polymer having rubber elasticity.
特に好ましい熱可塑性共重合体は、不飽和ニトリル成分としてアクリロニトリルを含有し、スチレン系成分としてスチレンを含有する共重合体である。 Particularly preferred thermoplastic copolymer contains acrylonitrile as the unsaturated nitrile component, it is a copolymer containing styrene as the styrene-based component. これら共重合体はAS樹脂やAAS樹脂として知られている。 These copolymers are known as AS resin and AAS resin.

【0039】本発明の熱可塑性共重合体(B)において、不飽和ニトリル単位とスチレン系単位の比率は、好ましくは、前者が20〜50重量%であり、後者が50 [0039] In the thermoplastic copolymer of the present invention (B), the ratio of the unsaturated nitrile unit and a styrene unit is preferably the former is 20 to 50 wt%, the latter 50
〜80重量%であり、より好ましくは、前者が25〜3 A 80% by weight, more preferably, the former 25-3
5重量%であり、後者が65〜75重量%である。 5 percent by weight, the latter is 65 to 75 wt%. 特に、前者が25〜30重量%で、後者が70〜75重量%の場合は更に好ましい結果を与える。 In particular, the former is at 25 to 30 wt%, the latter gives more favorable results in the case of 70 to 75 wt%. スチレン系化合物やニトリル系化合物の成分がこの範囲を超えると、 When components of the styrene compound and a nitrile compound exceeds this range,
(A)の熱可塑性樹脂との相溶性が乏しくなり、透明性に優れた偏光子保護フィルムを得ることができないおそれがある。 Compatibility with the thermoplastic resin (A) becomes poor, it may not be possible to obtain a polarizer protective film having excellent transparency. 第3成分は、これを添加する場合は、熱可塑性共重合体(B)中の含有率は5重量%以上、30重量%以下であることが好ましい。 The third component, if the addition of this thermoplastic copolymer (B) content is 5 wt% or more of, is preferably 30 wt% or less. 本発明の熱可塑性共重合体(B)は、不飽和ニトリル単位とスチレン系単位とを主成分(好ましくは、不飽和ニトリル単位とスチレン系単位との合計が、熱可塑性共重合体(B)の70重量% Thermoplastic copolymer (B) of the present invention, is an unsaturated nitrile unit and a styrene unit main component (preferably, the total of the unsaturated nitrile unit and a styrene unit, a thermoplastic copolymer (B) of 70% by weight
以上)として含むことが特に好ましい。 It is particularly preferred to include a higher). また、本発明の熱可塑性共重合体(B)は、1×10 4以上5×10 5以下の重量平均分子量を有することが好ましい。 The thermoplastic copolymer (B) of the present invention preferably has a weight average molecular weight of 5 × 10 5 or less 1 × 10 4 or more.

【0040】本発明の偏光子保護フィルムは、以上述べた熱可塑性樹脂(A)と熱可塑性樹脂(B)を単に混合することにより得られる樹脂組成物、または両樹脂を熱溶融混練して得られる樹脂組成物から作ることができる。 The polarizer protective film of the [0040] present invention, obtained by heat melting and kneading the obtained resin composition, or both resins by simply mixing the above-mentioned thermoplastic resin (A) and the thermoplastic resin (B) it can be made from be resin composition. これらの樹脂組成物は、必要に応じて、可塑剤、熱安定剤、紫外線吸収剤やフィラー等の公知の添加剤やその他の重合体を含有してもよい。 These resin compositions may optionally plasticizers, thermal stabilizers, may contain known additives or other polymers such as an ultraviolet absorber and a filler.

【0041】特に紫外線吸収剤を含有する偏光子保護フィルムは耐候性が向上するので実用上好ましい。 The polarizer protective film in particular containing an ultraviolet absorber is practically preferable since improved weather resistance. 紫外線吸収剤は、一般的に耐光安定剤と呼ばれているものであり、例えば、2−(2H−ベンゾトリアゾール−2−イル)−p−クレゾール、2−ベンゾトリアゾール−2− UV absorbers are those which are generally referred to as light stabilizers, for example, 2- (2H-benzotriazol-2-yl)-p-cresol, 2-benzotriazole-2
イル−4,6−ジ−t−ブチルフェノール等のベンゾトリアゾール系紫外線吸収剤、2−(4,6−ジフェニル−1,3,5−トリアジン−2−イル)−5−[(ヘキシル)オキシ]−フェノールなどのトリアジン系紫外線吸収剤、オクタベンゾン等のベンゾフェノン系紫外線吸収剤等が挙げられ、また、2,4−ジ−t−ブチルフェニル−3,5−ジ−t−ブチル−4−ヒドロキシベンゾエート等のベンゾエート系光安定剤やビス(2,2, Yl-4,6-benzotriazole ultraviolet absorbers such as di -t- butylphenol, 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5 - [(hexyl) oxy] - triazine-based UV absorber such as phenol, benzophenone ultraviolet absorbers such as Okutabenzon are mentioned, also 2,4-di -t- butyl-3,5-di -t- butyl-4-hydroxybenzoate benzoate-based light stabilizer and bis etc. (2,2,
6,6−テトラメチル−4−ピペリジル)セバケート等のヒンダードアミン系光安定剤等の光安定剤も使用できる。 6,6-tetramethyl-4-piperidyl) light stabilizers such as hindered amine light stabilizers such sebacate may also be used.

【0042】また、フィラーを含有する偏光子保護フィルムは、易滑性(滑り性)が優れるのでフィラーとして無機粒子または有機粒子の少なくとも一方を添加することは好ましい。 Further, the polarizer protective film containing a filler, because lubricity (slip properties) is excellent adding at least one inorganic or organic particles as a filler are preferred. フィルムが滑りにくいと、長尺フィルムの搬送時や巻取時に、しわや傷が発生し品質上問題となる。 The film is less likely to slip, during transport and during the take-up of the long film, the wrinkles and scratches are generated on the quality problem. フィラーとしては、シリカ、アルミナや酸化チタン等の無機粒子、あるいはポリメタクリル酸エステル系やポリアクリル酸エステル系、ポリオレフィン系、ポリスチレン系、ジビニルベンゼン系、ベンゾグアナミン系、 As the filler, silica, inorganic particles such as alumina or titanium oxide or polymethyl methacrylate-based or polyacrylate, polyolefin, polystyrene, divinylbenzene, benzoguanamine,
有機シリコーン系等の有機粒子が好ましく、これらを一種またはそれ以上含有させる事が出来る。 Organic particles of organic silicone type and the like are preferable, and these one or more content is allowed it is possible.

【0043】更に、樹脂組成物に可塑剤を加えることは有効である。 [0043] Furthermore, the addition of a plasticizer in the resin composition is effective. 特に熱可塑性樹脂(A)のマレイミド単位の含有率が40モル%以上と高い場合、得られるフィルムは硬く脆くなる傾向にあるため、可塑剤の添加はフィルムの応力白化や裂けを防止する。 Especially when the content of the maleimide units in the thermoplastic resin (A) is high and 40 mol% or more, the resulting film is hard and brittle tends, addition of a plasticizer to prevent tearing and stress whitening of the film. 好ましい可塑剤を例示すると、フタル酸系可塑剤としては、フタル酸ジメチル、フタル酸ジエチル、フタル酸ジ−n−ブチル、フタル酸ジ−n−オクチル、フタル酸ジ−n−エチルヘキシル、フタル酸ジイソオクチル、フタル酸ジ−n−オクチル、フタル酸ジ−n−デシル、フタル酸ジイソデシル、 To illustrate the preferred plasticizer, a phthalic acid-based plasticizer, phthalic acid dimethyl, diethyl phthalate, di -n- butyl phthalate, di -n- octyl phthalate, di -n- ethylhexyl, diisooctyl phthalate phthalate, di -n- octyl phthalate, di -n--decyl, diisodecyl phthalate,
フタル酸ジ−n−ドデシル、フタル酸ジイソトリデシル、フタル酸ジシクロヘキシル、フタル酸ブチルベンジル、フタル酸ジ−2−エチルヘキシル、イソフタル酸ジ−2−エチルヘキシル、脂肪族二塩基酸系可塑剤としては、アジピン酸ジ−n−デシル、アジピン酸ジイソデシル、アジピン酸ジ−2−エチルヘキシル、アゼライン酸ジ−2−エチルヘキシル、セバシン酸ジブチル、セバシン酸ジ−2−エチルヘキシル、リン酸エステル系可塑剤としては、リン酸トリブチル、リン酸トリ−2−エチルヘキシル、リン酸−2−エチルヘキシル、リン酸トリクレジール、エポキシ系可塑剤としては、エポキシ化大豆油、エポキシ化トール油脂肪酸−2−エチルヘキシル、 Phthalate, di -n- dodecyl, diisotridecyl phthalate, dicyclohexyl phthalate, butyl benzyl phthalate, di-2-ethylhexyl phthalate, isophthalate, di-2-ethylhexyl, aliphatic dibasic acid-based plasticizers, adipate di -n- decyl, diisodecyl adipate, di-2-ethylhexyl adipate, di-2-ethylhexyl azelate, dibutyl sebacate, di-2-ethylhexyl sebacate, as the phosphoric acid ester plasticizer, tributyl phosphate , tri-2-ethylhexyl phosphate, phosphoric acid-2-ethylhexyl, Torikurejiru phosphoric acid, the epoxy-based plasticizer, epoxidized soybean oil, epoxidized tall oil fatty acid 2-ethylhexyl,
脂肪酸エステル系可塑剤としては、ステアリン酸ブチル、オレイン酸ブチル、塩素化パラフィン、塩素化脂肪酸メチル、高分子系可塑剤としては、ポリエチレングリコールジメチルエーテル、ポリエチレングリコール安息香酸エステル、エステル基を含有する高分子化合物(アジピン酸、セバシン酸、フタル酸等の2塩基酸と1,2 Examples of the fatty acid ester-based plasticizers, butyl stearate, butyl oleate, chlorinated paraffin, chlorinated fatty acid methyl, the polymer-based plasticizer, containing polyethylene glycol dimethyl ether, polyethylene glycol benzoic acid ester, an ester group polymer compound (adipic acid, sebacic acid, and dibasic acids such as phthalic acid, 2
−プロピレングリコール、1,3−プロピレングリコール等の重縮合物)等が挙げられる。 - propylene glycol, 1,3-propylene polycondensate such as glycol), and the like. これら可塑剤の中でも、芳香族基を含まない可塑剤、例えばアジピン酸ジ− Among these plasticizers, plasticizers that do not contain aromatic groups, such as adipate -
n−デシル、アジピン酸ジイソデシル、アジピン酸ジ− n- decyl, diisodecyl adipate, di -
2−エチルヘキシル、アゼライン酸ジ−2−エチルヘキシル、セバシン酸ジブチル、セバシン酸ジ−2−エチルヘキシル、リン酸トリブチル、リン酸トリ−2−エチルヘキシル、リン酸−2−エチルヘキシル、リン酸トリクレジル、エポキシ化大豆油、エポキシ化トール油脂肪酸−2−エチルヘキシル、ステアリン酸ブチル、オレイン酸ブチル、塩素化パラフィン、塩素化脂肪酸メチル、ポリエチレングリコールジメチルエーテル、あるいはエステル基を含有する高分子化合物(アジピン酸、セバシン酸等の二塩基酸と1,2−プロピレングリコール、1, 2-ethylhexyl, di-2-ethylhexyl azelate, dibutyl sebacate, di-2-ethylhexyl sebacate, tributyl phosphate, tri-2-ethylhexyl phosphate, phosphoric acid-2-ethylhexyl phosphate, tricresyl phosphate, epoxidized Univ oil, epoxidized tall oil fatty acid 2-ethylhexyl, butyl stearate, butyl oleate, chlorinated paraffin, chlorinated fatty acid methyl, polyethylene glycol dimethyl ether or a polymer compound containing an ester group, (adipic acid, such as sebacic acid dibasic acid and 1,2-propylene glycol, 1,
3−プロピレングリコール等の重縮合物)等の可塑剤が好ましい。 Plasticizers polycondensates) such as 3-propylene glycol.

【0044】これらの可塑剤は、可視領域短波長側に吸収を持たないため特に好ましい添加剤である。 [0044] These plasticizers are particularly preferred additive because it has no absorption in the visible region short wavelength side. これら可塑剤は本発明の偏光子保護フィルム100重量部に対して2〜20重量部添加される。 These plasticizers are added 2 to 20 parts by weight with respect to the polarizer protective film 100 parts by weight of the present invention. 20重量部を超えると、 When it exceeds 20 parts by weight,
耐熱性を著しく低下させるおそれがある。 Which may significantly reduce the heat resistance.

【0045】本発明の偏光子保護フィルムは、光線透過度が80%以上であるという優れた透明性を示す。 The polarizer protective film of the [0045] present invention exhibits excellent transparency of light transmittance of 80% or more. 特に、イソブチレンとN−メチルマレイミドとを主成分として含む共重合体(A)と、アクリロニトリルとスチレンとを主成分として含む共重合体(B)とは、驚くべきことに、広い配合割合で良好な相溶性を示し、フィルムとした場合、全光線透過度で85%以上という高透明性を有し、かつヘイズが2%以下である光学フィルムを提供することができる。 In particular, a copolymer containing isobutylene and N- methylmaleimide as main component (A), and a copolymer containing as a main component and acrylonitrile and styrene (B), surprisingly, better in a wide mixing ratio It indicates Do compatibility, when the film has a high transparency of 85% or more total light transmittance and haze can provide an optical film is not more than 2%. また、イソブチレン−置換マレイミド系共重合体(A)からなるフィルムは可撓性が乏しく裂けやすいという欠点を有するが、アクリロニトリル−スチレン系共重合体(B)をブレンドすることにより、フィルムの機械的特性を向上させることができる。 Furthermore, isobutylene - although films consisting of substituted maleimide copolymer (A) has the disadvantage that flexibility torn easily poor, acrylonitrile - by blending the styrene-based copolymer (B), the mechanical film thereby improving the characteristics.

【0046】偏光子保護フィルムとして用いる場合において、熱可塑性樹脂(A)と熱可塑性樹脂(B)は、前者60〜95重量%に対して、後者5〜40重量%の割合で配合することが好ましい。 [0046] In case of using as a polarizer protective film, the thermoplastic resin (A) and the thermoplastic resin (B), the former 60 to 95 wt%, be blended in a proportion of the latter 5 to 40 wt% preferable. 熱可塑性樹脂(B)が5 Thermoplastic resin (B) is 5
重量%より少ないと、偏光子保護フィルムにした場合、 If less than the weight%, when the polarizer protective film,
平面方向、厚み方向の位相差が大きくなるおそれがある。 Plane direction, there is a possibility that the phase difference in the thickness direction is increased. また、熱可塑性樹脂(B)の配合率が40重量%を越えると、得られるフィルムの透明性が損なわれるおそれがある。 Further, when the blending ratio of the thermoplastic resin (B) exceeds 40 wt%, there is a possibility that the transparency of the resulting film is impaired. 両樹脂(A)および(B)を上記割合で配合することにより、フィルムの平面方向、厚み方向ともに位相差が小さく光学的均質性に優れ、かつ偏光子との接着に適した水蒸気透過度を有する偏光子保護フィルムとすることができる。 By both resins (A) and the (B) blended in the above proportion, the plane direction of the film, excellent in the phase difference is smaller optical homogeneity in the thickness direction both and water vapor permeability which is suitable for bonding the polarizer it can be a polarizer protective film having. 熱可塑性樹脂(A)と熱可塑性樹脂(B)は前者60〜80重量%に対して、後者20〜4 Thermoplastic resin (A) and the thermoplastic resin (B) with respect to the former 60 to 80 wt%, the latter 20-4
0重量%の割合で配合することがより好ましく、前者6 More preferably in a proportion of 0 wt%, the former 6
5〜75重量%に対して、後者25〜35重量%の割合は特に好ましい。 Relative to 5 to 75 wt%, the proportion of the latter 25 to 35% by weight are particularly preferred.

【0047】本発明の偏光子保護フィルムは、10〜2 The polarizer protective film of the [0047] present invention, 10 to 2
00g/(m 2・24hr)の水蒸気透過度を有することが好ましい。 It is preferred to have a water vapor permeability of 00g / (m 2 · 24hr) . 水蒸気透過度が10g/(m 2・24h Water vapor permeability of 10g / (m 2 · 24h
r)未満であると、偏光板を製造する際に偏光子と偏光子保護フィルムとの接着不良を生じるおそれがあり、逆に200g/(m 2・24hr)を越えると空気中の水分が偏光子保護フィルムを透過し水分に弱い偏光子が長期にわたり水分にさらされる事となり、偏光子保護の機能を発揮し難くなる。 If it is less than r), there may occur a bonding failure between the polarizer and the polarizer protective film in making the polarizing plate, moisture polarization in the air exceeds 200g / (m 2 · 24hr) Conversely weak polarizer to moisture through the child protective film becomes exposed to water for a long time, it becomes difficult to exhibit the function of the polarizer protective. より好ましくは、水蒸気透過度は25〜125/(m 2・24hr)であり、さらに好ましくは35〜95/(m 2・24hr)である。 More preferably, water vapor transmission rate is 25~125 / (m 2 · 24hr) , more preferably from 35~95 / (m 2 · 24hr) .

【0048】水蒸気透過度を好適な範囲とするためには、熱可塑性樹脂(A)と熱可塑性樹脂(B)の混合比率を調整する方法が簡便で好ましいが、各熱可塑性樹脂の共重合成分や共重合比を種々調整して行っても良い。 [0048] To a suitable range of water vapor permeability, a method of adjusting the mixing ratio of the thermoplastic resin (A) and the thermoplastic resin (B) is preferably a simple, copolymerization component of the thermoplastic resin the or copolymerization ratio may be performed by various adjustments.
特に熱可塑性樹脂(A)としてオレフィン成分を多量に共重合させた樹脂を用いると、水蒸気透過度が小さくなる傾向があり、オレフィン成分を少量共重合させた樹脂を用いると水蒸気透過度が大きくなる傾向がある。 In particular, when a thermoplastic resin (A) large amount of resin obtained by copolymerizing an olefin component as tend to water vapor permeability decreases, water vapor permeability increases the use of a small amount copolymerized resin obtained by the olefin component Tend.

【0049】また、水蒸気透過度はフィルムの膜厚に概ね反比例するので、フィルムの厚みによっても水蒸気透過度を好適な範囲とすることができ、本発明の偏光子保護フィルムの厚みは、好ましくは20〜200μm、より好ましくは30〜150μm、さらに好ましくは40 [0049] Further, since the water vapor transmission rate is generally inversely proportional to the thickness of the film, also can be a preferred range of water vapor permeability by the thickness of the film, the thickness of the polarizer protective film of the present invention are preferably 20 to 200 [mu] m, more preferably 30 to 150 [mu] m, more preferably 40
〜100μmであり、この様な厚み範囲において、10 Is a ~100μm, in such a thickness range, 10
〜200g/(m 2・24hr)の水蒸気透過度が実現しやすい。 To 200 g / water vapor permeability of (m 2 · 24hr) it is easily realized.

【0050】本発明の偏光子保護フィルムは、前記した熱可塑性樹脂(A)と熱可塑性樹脂(B)を含有する樹脂組成物を用いる事により、フィルムの平面方向や厚み方向の位相差が極めて小さい。 The polarizer protective film of the [0050] present invention, by using a resin composition containing the thermoplastic resin (A) and the thermoplastic resin (B), the phase difference in the plane direction and the thickness direction of the film is very small. 本発明の偏光子保護フィルムは、フィルムの平面方向の位相差が20nm以下であることが好ましい。 The polarizer protective film of the present invention is preferably a retardation in the plane direction of the film is 20nm or less. フィルムの平面方向の位相差が2 Retardation in the plane direction of the film 2
0nmを越えると液晶表示装置において光漏れによるコントラスト不良の原因となる場合がある。 It can lead to contrast defects due to light leakage in the liquid crystal display device exceeds 0 nm. また、本発明の偏光子保護フィルムは、フィルムの厚み方向の位相差が100nm以下であることが好ましい。 Further, the polarizer protective film of the present invention, it is preferable retardation in the thickness direction of the film is 100nm or less. フィルムの厚み方向の位相差が100nmを越えると広い視野角を有する液晶表示装置が得られにくくなり、大画面化の障害となる場合がある。 The phase difference in the thickness direction of the film exceeds 100nm liquid crystal display device is difficult to obtain with a wide viewing angle, which may become an obstacle to screen size.

【0051】位相差の小さいフィルムを得るには、熱可塑性樹脂(A)と熱可塑性樹脂(B)との混合比が重要である。 [0051] To obtain film having a small retardation, the mixing ratio of the thermoplastic resin (A) and the thermoplastic resin (B) is important. 混合比を好適な範囲とする事により、分子の配向による位相差が極めて小さいフィルムを得やすい。 By the mixing ratio with the preferred range, the phase difference due to the orientation of the molecules is likely to give a very small film. 好ましい混合比は熱可塑性樹脂(A)および(B)の種類により依存し、実験的に好ましい混合比を決める必要があるが、好ましくは、熱可塑性樹脂(A)と熱可塑性樹脂(B)の重量比が60:40〜80:20、より好ましくは、65:35〜75:25である。 Preferred mixing ratios depending on the type of the thermoplastic resin (A) and (B), it is necessary to determine experimentally preferred mixing ratio, preferably, the thermoplastic resin (A) and thermoplastic resin (B) weight ratio of 60: 40 to 80: 20, more preferably, 65: 35 to 75: 25.

【0052】分子の配向による位相差の発現しやすさは、一定条件下でフィルムを延伸することにより発現する位相差(配向位相差)で評価することが可能である。 [0052] Phase difference expression ease of due to the orientation of the molecules can be evaluated by the phase difference expressed by stretching a film under certain conditions (orientation phase difference).
一般的に光学フィルムとして使用されているビスフェノールAタイプのポリカーボネートは1000nm以上の大きな位相差を示すが、熱可塑性樹脂(A)および熱可塑性樹脂(B)の重量比を上記範囲にすれば、フィルムの平面方向の位相差は好ましくは20nm以下、より好ましくは15nm以下、更に好ましくは10nm以下とすることができる。 Bisphenol A type polycarbonate that is generally used as an optical film exhibits a large phase difference than 1000 nm, if the weight ratio of the thermoplastic resin (A) and thermoplastic resin (B) within the above range, the film phase difference in the plane direction is preferably 20nm or less, more preferably 15nm or less, more preferably to a 10nm or less. 更に、この範囲で重量比を変化させることにより、配向位相差の制御が可能であり、驚くべきことに、組成を最適化することにより配向位相差が実質的にゼロである、すなわち分子が配向してもフィルム平面方向にも厚み方向にも位相差が発現しないフィルムを得ることも可能である。 Further, by changing the weight ratio in this range, it is possible to control the orientation phase difference, surprisingly, the orientation phase difference by optimizing the composition is substantially zero, i.e. molecular orientation it is also possible to retardation in the thickness direction in the film plane direction and obtain a film that does not express.

【0053】上記樹脂組成物をフィルム化するためには、公知の方法、例えば、溶融押出し法、インフレーション法、溶液流延法等のいずれをも採用することができるが、溶液流延法を採用すると、ダイライン等の欠陥がなく、フィルム厚みのバラツキが5%以下と小さく、また位相差の小さい光学的に等方なフィルムを得ることが比較的容易にできる。 [0053] To a film of the above resin composition, known methods, for example, melt-extrusion method, inflation method, can be employed any of such solution casting method, employing a solution casting method Then, no defects such as die lines, smaller the variation of the film thickness of 5% or less, and can be relatively easily obtain a small optically isotropic film having a phase difference.

【0054】溶液流延法に用いることのできる溶剤は、 [0054] solvent that can be used in the solution casting method,
樹脂材料(樹脂(A)および(B))の種類に応じて、 Depending on the type of resin material (resin (A) and (B)),
公知の溶剤から選択される。 It is selected from known solvents. 塩化メチレンやトリクロロエタン等のハロゲン化炭化水素系溶剤は樹脂材料を溶解しやすく、また沸点も低いため好適な溶剤の一つである。 Halogenated hydrocarbon solvents such as methylene chloride and trichloroethane are likely to dissolve the resin material and the boiling point is also one of preferred solvents for low. また、ジメチルホルムアミドやジメチルアセトアミド等の極性の高い非ハロゲン系の溶剤も用いることができる。 Further, highly polar non-halogenated solvents such as dimethylformamide or dimethylacetamide can be used. さらに、トルエン、キシレンやアニソール等の芳香族系や、ジオキサン、ジオキソラン、テトラヒドロフランやピラン等の環状エーテル系、メチルエチルケトン等のケトン系の溶剤も使用可能である。 Further, toluene, and aromatic, such as xylene or anisole, dioxane, dioxolane, cyclic ether such as tetrahydrofuran or pyran, ketone solvents such as methyl ethyl ketone can be used. これら溶剤は相互に混合して用いることもでき、また、アルコール等の非溶剤を混合して、溶剤の蒸発速度を制御することも、 These solvents can be used as a mixture with one another, also a mixture of a non-solvent such as alcohol, also control the rate of evaporation of the solvent,
表面性の優れたフィルムを得るためには好ましい方法である。 To obtain a surface having excellent film is a preferred method.

【0055】溶液流延法によりフィルム化する場合、本発明の樹脂(A)および樹脂(B)を前記溶剤に溶解したのち、支持体に流延し、乾燥してフィルムとする。 [0055] When a film by a solution casting method, after the resin (A) and the resin (B) of the present invention was dissolved in the solvent, was cast on a support and dried to a film. この際の流延膜厚は、乾燥後のフィルム厚みが20〜20 Casting thickness at this time, the film thickness after drying 20 to 20
0μmとなるように固形分濃度を勘案し、決定すれば良い。 Considering the solid concentration so that the 0 .mu.m, may be determined.

【0056】好ましい支持体としては、ステンレス鋼のエンドレスベルトや、ポリイミドフィルムや二軸延伸ポリエチレンテレフタレートフィルム等のようなフィルムを用いることができる。 [0056] Preferred as the support, and an endless belt of stainless steel, it is possible to use a film such as a polyimide film or a biaxially stretched polyethylene terephthalate film.

【0057】必要に応じて、予備乾燥したフィルムを支持体から剥離し、さらに乾燥することもできる。 [0057] Optionally, stripping the pre-dried film from the support, can be further dried. フィルムの乾燥は、一般には、フロート法や、テンターあるいはロール搬送法が利用できる。 Drying of the film is generally a float method, a tenter or a roll conveyance method can be utilized. フロート法の場合、フィルム自体が複雑な応力を受け、光学的特性の不均一が生じやすい。 If the float method, the film itself is subjected to complex stresses, unevenness tends to occur in the optical properties. また、テンター法の場合、フィルム両端を支えているピンあるいはクリップの距離により、溶剤乾燥に伴うフィルムの幅収縮と自重を支えるための張力を均衡させる必要があり、複雑な幅の拡縮制御を行う必要がある。 Further, in the case of the tenter method, the distance of pin or clip bears the both ends of the film, it is necessary to balance the tension for supporting the width shrinkage and own weight of the film due to solvent drying and scaling control complex width There is a need. 一方、ロール搬送法の場合、安定なフィルム搬送のためのテンションは原則的にフィルムの流れ方向(M On the other hand, if the roll conveying method, the tension for stable film transport in principle the film flow direction (M
D方向)にかかるため、応力の方向を一定にしやすい特徴を有する。 Because according to the direction D), having an easily characterized directions of stress constant. 従って、フィルムの乾燥は、ロール搬送法によることが最も好ましい。 Therefore, drying of the film, it is most preferred due to the roll conveying method.

【0058】既述の通り、樹脂組成物を得る方法として、熱可塑性樹脂(A)と熱可塑性樹脂(B)を単に混合することにより樹脂組成物を得る方法や、両樹脂を熱溶融混練して樹脂組成物を得る方法が挙げられるが、フィルム化に先立ち、用いる樹脂組成物を予備乾燥しておくことはフィルムの発泡など、欠陥を防ぐ上で有用である。 [0058] As described above, as a method of obtaining a resin composition, by simply mixing the thermoplastic resin (A) and the thermoplastic resin (B) a method of obtaining a resin composition, both resins thermally melted and kneaded the method can be exemplified to obtain the resin composition Te, but prior to filming, that you predrying using resin compositions, such as foaming of the film, it is useful in preventing defects.

【0059】本発明の偏光子保護フィルムの光線透過度は、85%以上が好ましく、より好ましくは、88%以上である。 [0059] light transmittance of the polarizer protective film of the present invention is preferably at least 85%, more preferably 88% or more. また、フィルムのヘーズは2%以下が好ましく、より好ましくは1%以下である。 Further, the haze of the film is preferably 2% or less, more preferably 1% or less.

【0060】 [0060]

【実施例】以下実施例に従って本発明を具体的に説明する。 Specifically describe the present invention in accordance with the following examples. 実施例および比較例に示される各物性値の測定方法は以下の通りである。 Methods of measuring physical property values ​​shown in the Examples and Comparative Examples are as follows. <光線透過度> JIS K7105−1981の5. 5 of <light transmittance of> JIS K7105-1981.
5記載の方法により550nmの光を用いて測定した。 It was measured using a light of 550nm by the method 5 described. <ヘーズ> JIS K7105−1981の6.4記載の方法により測定した。 It was measured by the method of 6.4 description of the <Haze> JIS K7105-1981. <平面方向の位相差>顕微偏光分光光度計(オーク製作所:TFM−120AFT)を用い、測定波長514. <Retardation in the plane direction> microscopic polarization spectrophotometer (Oak Seisakusho: TFM-120AFT) using a measurement wavelength 514.
5nmで測定した。 It was measured at 5nm. <厚み方向の位相差>顕微偏光分光光度計(オーク製作所:TFM−120AFT)を用い、514.5nmの測定波長で位相差の角度依存性を測定し、nx、ny、 <Retardation in the thickness direction> microscopic polarization spectrophotometer (Oak Seisakusho: TFM-120AFT) used to measure the angular dependence of the retardation at a measurement wavelength of 514.5 nm, nx, ny,
nzを求めた。 I was asked to nz. 別途フィルムの厚みを測定し、下式を用いて厚み方向の位相差を計算した。 Separately thickness of the film was measured to calculate the retardation in the thickness direction using the following equation. 厚み方向の位相差=((nx+ny)/2−nz)×d <水蒸気透過度> スイス リッシー社製 水蒸気透過度テスター L80−4000型を使用して、JIS Using the phase difference = ((nx + ny) / 2-nz) × d <vapor permeability> Swiss Risshi Co. vapor permeability Tester L80-4000 type thickness direction, JIS
K7129(40℃、90%RH)に準拠して測定した。 K7129 (40 ℃, RH 90%) was measured in accordance with.

【0061】(実施例1) イソブテンとN−メチルマレイミドから成る交互共重合体(N−メチルマレイミド含量50モル%、ガラス転移温度157℃)80重量部と、アクリロニトリルの含量が26重量%であるアクリロニトリル・スチレン共重合体20重量部を、塩化メチレン溶液に固形分濃度15重量%になるように溶解し、 [0061] (Example 1) alternating copolymer of isobutene and N- methylmaleimide (N- methylmaleimide content of 50 mol%, the glass transition temperature of 157 ° C.) and 80 parts by weight, the content of acrylonitrile is 26 wt% acrylonitrile-styrene copolymer 20 parts by weight, was dissolved in a solid content concentration of 15 wt% methylene chloride solution,
ドープとした。 It was the dope. ガラス板上に敷いたポリエチレンテレフタレート(帝人製テトロンHS)上にバーコーターを用いて流延し、室温で60分放置した。 On a polyethylene terephthalate lined on a glass plate (Teijin Tetron HS) cast using a bar coater and allowed to stand 60 minutes at room temperature. その後フィルムを剥し、4片固定治具に挟んで、100℃で10分間、更に140℃で10分間、160℃で30分間の乾燥を行って厚さ52μmのフィルムを得た。 Then peeled off the film, sandwiched 4 pieces fixture, 10 minutes at 100 ° C., further 140 ° C. for 10 minutes to obtain a film having a thickness of 52μm and then dried for 30 minutes at 160 ° C.. このフィルムの厚みバラツキは2%、平面方向の位相差値は4nm、厚み方向の位相差が4nm、光線透過度は92%、ヘーズは0.3%であった。 The thickness variation of 2% of the film, a retardation value in the plane direction is 4 nm, the thickness direction retardation is 4 nm, light transmittance of 92%, haze was 0.3%. このフィルムはガラス転移温度14 This film has a glass transition temperature 14
5℃であった。 It was 5 ℃.

【0062】(実施例2〜4、比較例1) アクリロニトリル含量およびアクリロニトリル・スチレン共重合体の重量部数を変化させ、厚さ52μmのフィルムを得た。 [0062] (Example 2-4, Comparative Example 1) by changing the number of parts by weight of acrylonitrile content and acrylonitrile-styrene copolymer, to obtain a film having a thickness of 52 .mu.m. 得られたフィルムの特性を表1に示した。 Properties of the obtained film are shown in Table 1.

【0063】(実施例5) 樹脂の塩化メチレン溶液に、アエロジルR972(日本アエロジル製)を樹脂1 [0063] (Example 5) in methylene chloride solution of the resin, Aerosil R972 (Nippon Aerosil) resin 1
00重量部に対し、0.05重量部加えた以外は、実施例1と同様にして、厚さ51μmのフィルムを得た。 00 parts by weight based on the exception of adding 0.05 parts by weight, in the same manner as in Example 1 to obtain a film having a thickness of 51 [mu] m. 得られたフィルムの特性を表1に示した。 Properties of the obtained film are shown in Table 1.

【0064】(実施例6) 樹脂の塩化メチレン溶液に、紫外線吸収剤である2−(2H−ベンゾトリアゾール−2−イル)−p−クレゾール(チバ・スペシャリティ・ケミカルズ社)を樹脂100重量部に対し、1重量部加えた以外は、実施例1と同様にして、厚さ52μm [0064] in methylene chloride solution (Example 6) resins, a UV absorber 2-(2H-benzotriazol-2-yl)-p-cresol (manufactured by Ciba Specialty Chemicals Inc.) in 100 parts by weight resin contrast, except for adding 1 part by weight, in the same manner as in example 1, the thickness of 52μm
のフィルムを得た。 To obtain a film. 得られたフィルムの特性を表1に示した。 Properties of the obtained film are shown in Table 1.

【0065】(比較例2) 日本ゼオン製ゼオノア14 [0065] (Comparative Example 2) Nippon Zeon ZEONOR 14
20Rのキシレン溶液(樹脂濃度=35重量%)を調整して、ドープとした。 Adjust the 20R xylene solution (resin concentration = 35 wt%), was doped. 該ドープを実施例1と同様にしてキャストし、室温で10分間放置後、さらに80℃で4 Cast in the same manner the dope as in Example 1, after standing at room temperature for 10 minutes, at more 80 ° C. 4
分間、120℃で8分間、170℃で4分間乾燥させた後基材フィルムから剥がし50μmのフィルムを得た。 Minutes, 8 minutes at 120 ° C., to obtain a 50μm film peeled from the base film after drying for 4 minutes at 170 ° C..
得られたフィルムの特性を表1に示した。 Properties of the obtained film are shown in Table 1.

【0066】 [0066]

【表1】 [Table 1]

【0067】 [0067]

【発明の効果】本発明の偏光子保護フィルムは、熱可塑性樹脂(A)および(B)を含有する樹脂組成物を用いる事により、フィルムの平面方向および厚み方向の位相差が極めて小さい。 The polarizer protective film of the present invention exhibits, by using a resin composition containing thermoplastic resin (A) and the (B), the phase difference in the plane direction and the thickness direction of the film is extremely small. 更に、偏光子保護フィルムとして適度な水蒸気透過度を有している。 Further it has an appropriate water vapor transmission rate as a polarizer protective film.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl. 7識別記号 FI テーマコート゛(参考) C08L 23/00 C08L 23/00 25/00 25/00 33/20 33/20 35/00 35/00 101/02 101/02 // B29K 45:00 B29K 45:00 B29L 7:00 B29L 7:00 ────────────────────────────────────────────────── ─── of the front page continued (51) Int.Cl. 7 identification mark FI theme Court Bu (reference) C08L 23/00 C08L 23/00 25/00 25/00 33/20 33/20 35/00 35/00 101 / 02 101/02 // B29K 45:00 B29K 45:00 B29L 7:00 B29L 7:00

Claims (12)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 (A)側鎖に置換または非置換イミド基を有する熱可塑性樹脂、および(B)側鎖に置換または非置換フェニル基とニトリル基を有する熱可塑性樹脂を含有する樹脂組成物からなるフィルムであって、40 1. A (A) a thermoplastic having a substituted or unsubstituted imide group on the side chain resin, and (B) side chains resin composition containing a thermoplastic resin having a substituted or unsubstituted phenyl group and nitrile group in a film consisting of 40
    ℃、90%RHにおける水蒸気透過度が、10〜200 ° C., the water vapor permeability at 90% RH, 10 to 200
    g/(m 2・24hr)であることを特徴とする偏光子保護フィルム。 polarizer protective film, characterized in that the g / (m 2 · 24hr) .
  2. 【請求項2】 平面方向の位相差が20nm以下であることを特徴とする請求項1に記載の偏光子保護フィルム。 2. A polarizer protective film according to claim 1, the phase difference in the plane direction is equal to or is 20nm or less.
  3. 【請求項3】 厚み方向の位相差が100nm以下であることを特徴とする請求項1または請求項2に記載の偏光子保護フィルム。 Polarizer protective film according to claim 1 or claim 2 phase difference wherein thickness direction, characterized in that at 100nm or less.
  4. 【請求項4】 (A)の熱可塑性樹脂が、下記式(1) 4. A thermoplastic resin is a compound represented by the following formula of (A) (1)
    で表される繰り返し単位と下記式(2)で表される繰り返し単位を含有することを特徴とする請求項1ないし請求項3のいずれか1項に記載の偏光子保護フィルム。 Polarizer protective film according to any one of claims 1 to 3, characterized by containing a repeating unit and a repeating unit represented by the following formula (2) represented in. 【化1】 [Formula 1] (ここで、R 1 、R 2およびR 3は、それぞれ独立に、水素または炭素数1〜8のアルキル基を示す。) 【化2】 (Wherein, R 1, R 2 and R 3 each independently represent a hydrogen or an alkyl group having 1 to 8 carbon atoms.) Embedded image (ここで、Rは、炭素数1〜18のアルキル基、または炭素数3〜12のシクロアルキル基を示す) (Wherein, R represents an alkyl group or a cycloalkyl group having 3 to 12 carbon atoms, having 1 to 18 carbon atoms)
  5. 【請求項5】 (B)の熱可塑性樹脂が、置換または非置換スチレン単位と、置換または非置換アクリロニトリル単位を含有することを特徴とする請求項1ないし請求項4のいずれか1項に記載の偏光子保護フィルム。 5. The thermoplastic resin (B) is a substituted or an unsubstituted styrene unit, according to any one of claims 1 to 4, characterized in that it contains a substituted or unsubstituted acrylonitrile units the polarizer protective film of.
  6. 【請求項6】 (B)の熱可塑性樹脂における、置換または非置換スチレン単位の含有率が50重量%以上80 In 6. (B) a thermoplastic resin, the content of the substituted or unsubstituted styrene unit 50 wt% or more 80
    重量%以下であり、置換または非置換アクリロニトリル単位の含有率が20重量%以上50重量%以下であることを特徴とする請求項5に記載の偏光子保護フィルム。 Or less by weight%, the polarizer protective film according to claim 5, wherein the content of substituted or unsubstituted acrylonitrile units is less than 50 wt% to 20 wt%.
  7. 【請求項7】 樹脂組成物中の(A)の熱可塑性樹脂の含有率が60重量%以上90重量%以下であることを特徴とする請求項1ないし請求項6のいずれか1項に記載の偏光子保護フィルム。 7. according to any one of claims 1 to 6 the content of the thermoplastic resin in the resin composition (A) is equal to or less than 90 wt% 60 wt% or more the polarizer protective film of.
  8. 【請求項8】 樹脂組成物中の(B)の熱可塑性樹脂の含有率が10重量%以上40重量%以下であることを特徴とする請求項1ないし請求項7のいずれか1項に記載の偏光子保護フィルム。 8. claimed in any one of claims 1 to 7 the content of the thermoplastic resin in the resin composition of (B) is equal to or less than 40 wt% 10 wt% or more the polarizer protective film of.
  9. 【請求項9】 無機粒子または有機粒子の少なくとも一方を含有することを特徴とする請求項1ないし請求項8 9. claims, characterized in that it contains at least one inorganic or organic particles 1 to claim 8
    のいずれか1項に記載の偏光子保護フィルム。 Polarizer protective film according to any one of.
  10. 【請求項10】 紫外線吸収剤を含有することを特徴とする請求項1ないし請求項9のいずれか1項に記載の偏光子保護フィルム。 10. A polarizer protective film according to any one of claims 1 to 9, characterized in that it contains an ultraviolet absorber.
  11. 【請求項11】 厚みが20〜200μmである、請求項1ないし請求項10のいずれか1項に記載の偏光子保護フィルム。 11. The thickness is 20 to 200 [mu] m, the polarizer protective film according to any one of claims 1 to 10.
  12. 【請求項12】 (A)側鎖に置換または非置換イミド基を有する熱可塑性樹脂、(B)側鎖に置換または非置換フェニル基とニトリル基を有する熱可塑性樹脂、および溶剤、を含有する樹脂溶液を乾燥後のフィルム厚みが20〜200μmとなるように支持体に流延する工程と、該樹脂溶液を乾燥させる工程を含む偏光子保護フィルムの製造方法。 12. (A) a thermoplastic having a substituted or unsubstituted imide group on the side chain resin containing, thermoplastic resin, and a solvent having a substituted or unsubstituted phenyl group and nitrile group in (B) side chains a step of the resin solution film thickness after drying is cast on a support so that 20 to 200 [mu] m, the manufacturing method of the polarizer protective film comprising the step of drying the resin solution.
JP2001093827A 2000-03-30 2001-03-28 Protective film for polarizer and its manufacturing method Pending JP2001343529A (en)

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WO2017183499A1 (en) 2016-04-18 2017-10-26 日東電工株式会社 Liquid crystal display device
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000080240A (en) * 1998-09-07 2000-03-21 Tosoh Corp Transparent film

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000080240A (en) * 1998-09-07 2000-03-21 Tosoh Corp Transparent film

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