JPS6361203A - Polarizing plate and its production - Google Patents
Polarizing plate and its productionInfo
- Publication number
- JPS6361203A JPS6361203A JP20544686A JP20544686A JPS6361203A JP S6361203 A JPS6361203 A JP S6361203A JP 20544686 A JP20544686 A JP 20544686A JP 20544686 A JP20544686 A JP 20544686A JP S6361203 A JPS6361203 A JP S6361203A
- Authority
- JP
- Japan
- Prior art keywords
- polarizing
- polarizing plate
- thermotropic liquid
- liquid crystalline
- film
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 229920005989 resin Polymers 0.000 claims abstract description 20
- 239000011347 resin Substances 0.000 claims abstract description 20
- 229920000106 Liquid crystal polymer Polymers 0.000 claims abstract description 15
- 239000011241 protective layer Substances 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims abstract description 3
- 230000008018 melting Effects 0.000 claims abstract description 3
- 238000004898 kneading Methods 0.000 claims abstract 2
- 150000001875 compounds Chemical class 0.000 claims description 10
- 239000010410 layer Substances 0.000 claims description 7
- 229920006352 transparent thermoplastic Polymers 0.000 claims description 5
- 239000011342 resin composition Substances 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 15
- 229920000728 polyester Polymers 0.000 abstract description 6
- 229920000515 polycarbonate Polymers 0.000 abstract description 3
- 239000004417 polycarbonate Substances 0.000 abstract description 3
- 229920005992 thermoplastic resin Polymers 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000005336 cracking Methods 0.000 abstract 1
- 238000010030 laminating Methods 0.000 abstract 1
- 230000003746 surface roughness Effects 0.000 abstract 1
- 239000000975 dye Substances 0.000 description 18
- 239000000203 mixture Substances 0.000 description 13
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- 239000004974 Thermotropic liquid crystal Substances 0.000 description 9
- 230000010287 polarization Effects 0.000 description 9
- 238000002834 transmittance Methods 0.000 description 6
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 4
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 3
- -1 Polyethylene terephthalate Polymers 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229920000306 polymethylpentene Polymers 0.000 description 3
- 239000011116 polymethylpentene Substances 0.000 description 3
- 229920000098 polyolefin Polymers 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- 239000011630 iodine Substances 0.000 description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920005668 polycarbonate resin Polymers 0.000 description 2
- 239000004431 polycarbonate resin Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- YHQXBTXEYZIYOV-UHFFFAOYSA-N 3-methylbut-1-ene Chemical compound CC(C)C=C YHQXBTXEYZIYOV-UHFFFAOYSA-N 0.000 description 1
- 229940090248 4-hydroxybenzoic acid Drugs 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- SJEYSFABYSGQBG-UHFFFAOYSA-M Patent blue Chemical compound [Na+].C1=CC(N(CC)CC)=CC=C1C(C=1C(=CC(=CC=1)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](CC)CC)C=C1 SJEYSFABYSGQBG-UHFFFAOYSA-M 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 239000000980 acid dye Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- PNOXNTGLSKTMQO-UHFFFAOYSA-L diacetyloxytin Chemical compound CC(=O)O[Sn]OC(C)=O PNOXNTGLSKTMQO-UHFFFAOYSA-L 0.000 description 1
- 239000000982 direct dye Substances 0.000 description 1
- 239000000986 disperse dye Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920001600 hydrophobic polymer Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000008775 paternal effect Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 150000004291 polyenes Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
- YZYKBQUWMPUVEN-UHFFFAOYSA-N zafuleptine Chemical compound OC(=O)CCCCCC(C(C)C)NCC1=CC=C(F)C=C1 YZYKBQUWMPUVEN-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は新規な偏光板及びその製造方法に関するもので
、サーモトロピック液晶性高分子化合物と二色性色素か
らなる偏光フィルム製造時共押出法により透明樹脂フィ
ルムからなる保護層を設けることを特徴とする偏光板に
関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a novel polarizing plate and a method for producing the same, and includes a co-extrusion method for producing a polarizing film comprising a thermotropic liquid crystalline polymer compound and a dichroic dye. The present invention relates to a polarizing plate characterized in that it is provided with a protective layer made of a transparent resin film.
従来の偏光フィルムとしては、ポリビニルアルコール（
ＰＶＡ）系フィルムにヨウ素あるいは二色性色素を染着
したものが周知である。Conventional polarizing films include polyvinyl alcohol (
PVA) type films dyed with iodine or dichroic dyes are well known.
しかしながら、これらの偏光フィルムは偏光性能はすぐ
れているが、耐熱性、耐湿性などに難点があシ、これを
改良するために後加工にて保護層として酢酸セルロース
系フィルムやアクリル系フィルムを粘着剤などを介して
貼シ合せて用いられている。しかしながら、これでも用
途によってはｉｔ湿性が十分でない他、保護層貼シ合せ
時にウキやシワが発生したシ、高温高湿下の使用におい
ては、粘着剤層のウキが発生するという問題がある。However, although these polarizing films have excellent polarizing performance, they have drawbacks such as heat resistance and moisture resistance. They are used by pasting them together with an agent or the like. However, even with this, there are problems in that the wettability is not sufficient depending on the application, and that floating and wrinkles may occur when the protective layer is laminated, and that the adhesive layer may float when used under high temperature and high humidity conditions.
ＰＶＡ系以外の疎水性重合体を基材とする偏光フィルム
としてはハロゲン化ビニル重合体を脱ハロゲン化水素処
理してポリエン構造を形成させた偏光フィルムも検討さ
れているが、これらも耐熱性および光、酸素に対する安
定性に問題があるほか色相の自由な選択が不可能である
ゑ
ことなどの理由から未だ偏光フィルムの主流〆占めるに
は至っていない。As a polarizing film based on a hydrophobic polymer other than PVA, polarizing films made by dehydrohalogenating a halogenated vinyl polymer to form a polyene structure are also being considered, but these also have poor heat resistance and It has not yet become the mainstream of polarizing films because of its stability against light and oxygen and the inability to freely select hues.
さらに例えば特開昭！；７−を亭４ｔＯ？、特開昭！ｔ
−／２’ｌＡ２／などによればポリアミド系及びポリエ
ステル系偏光フィルムが示されている。Furthermore, for example, Tokukai Akira! ;7- 4tO? , Tokukai Akira! t
-/2'lA2/ etc. indicate polyamide-based and polyester-based polarizing films.
ポリアミド−染料系及びポリエステル−染料系偏光フィ
ルムは耐熱性、耐湿性はＰＶＡ−ヨウ素系偏光フィルム
、ＰＶＡ−二色性染料系偏光フィルムにくらべてすぐれ
ているが、偏光性能が２者にくらべて劣っている他−軸
延伸フィルムであるためにタテ裂けが激しく未だ実用化
の段階まで至っていない。Polyamide-dye-based and polyester-dye-based polarizing films have better heat resistance and moisture resistance than PVA-iodine-based polarizing films and PVA-dichroic dye-based polarizing films, but their polarizing performance is lower than that of the two. Inferior: Since it is an axially stretched film, it suffers from severe vertical tearing and has not yet reached the stage of practical use.
本発明者等は上述のような従来の問題点を解消すべく鋭
意検討を行なった結果、サーモトロピック液晶性高分子
化合物と二色性色素を組合せて用いれば溶融製膜という
簡単な方法で高度な配向性能を発揮し、高度な偏光性能
を有する耐熱湿性にすぐれた偏光フィルムとなること、
及び、溶融製膜時に多層共押出法を用いることにより偏
光フィルムの片側又は両側を透明樹脂フィルムで保護強
化した多層構造の偏光板とすることにより、従来の偏光
フィルムの欠点である配向フィルムであるため縦裂けし
やすい欠点や、製膜時に表面が肌荒れするなどの欠点も
解消し得ることを見出し本発明を完成した。The inventors of the present invention have conducted intensive studies to resolve the above-mentioned conventional problems, and have found that by using a combination of a thermotropic liquid crystalline polymer compound and a dichroic dye, a highly advanced To be a polarizing film that exhibits excellent alignment performance, has high polarization performance, and has excellent heat and humidity resistance.
In addition, by using a multilayer coextrusion method during melt film formation, a polarizing plate with a multilayer structure in which one or both sides of the polarizing film is protected and reinforced with a transparent resin film, it is an oriented film that has the drawbacks of conventional polarizing films. The present invention has been completed based on the discovery that it is possible to overcome the disadvantages of easy longitudinal tearing and roughness of the surface during film formation.
すなわち、本発明の要旨はサーモトロピック液晶性高分
子化合物と二色性色素からなる偏光フィルムの少なくと
も片面に透明熱可塑性樹脂フィルムからなる保護層を積
層した偏光板及び該偏光板を多層共押出法にて製造する
偏光板の製造方法に存する。That is, the gist of the present invention is to provide a polarizing plate in which a protective layer made of a transparent thermoplastic resin film is laminated on at least one side of a polarizing film made of a thermotropic liquid crystalline polymer compound and a dichroic dye, and a multilayer coextrusion method for producing the polarizing plate. The method of manufacturing a polarizing plate manufactured by
本発明の偏光板を得るだめのサーモトロピック液晶性高
分子化合物は、一般に主鎖及び／又は側鎖中にメソゲン
基を有しておシ、７個又はそれ以上の下記構成部分
ＩＩ ＩＩ
１ｌ−Ｏ−Ｒ−Ｃ−、−Ｒ’−０−、−Ｃ−Ｒ’ −
Ｃ−ここでＲ、Ｒ’又はＲ“は芳香族残基であり、一般
式で示せば
どである）等の構造のものである。The thermotropic liquid crystalline polymer compound used to obtain the polarizing plate of the present invention generally has a mesogenic group in the main chain and/or side chain, and has seven or more of the following constituent moieties II II.
1l-O-R-C-, -R'-0-, -C-R'-
C-wherein R, R' or R'' is an aromatic residue, and has a structure such as (as shown in the general formula).
を含有するサーモトロピック液晶性ポリエステルなどが
ある。There are thermotropic liquid crystalline polyesters containing
ポリエステル系のサーモトロピック液晶性高分子として
は、脂肪族芳香族系共重合サーモトロピック液晶性高分
子、全芳香族系共重合サーモトロピック液晶高分子が挙
げられ、具体例としては、ポリエチレンテレフタレート
にパラヒドロキシ安息香酸と酢酸等のアシル化剤を反応
させ共重合系オリゴマーを形成させたのち重合して得ら
れる共重合ポリエステルが挙げられる。Examples of polyester-based thermotropic liquid crystal polymers include aliphatic aromatic copolymerized thermotropic liquid crystal polymers and fully aromatic copolymerized thermotropic liquid crystal polymers. Examples include copolymerized polyesters obtained by reacting hydroxybenzoic acid with an acylating agent such as acetic acid to form a copolymerized oligomer, which is then polymerized.
上記サーモトロピック液晶性化合物と二色性色素からな
るイ目成物を剪断及びドラフト下で溶融製膜すれば高度
な分子配向性を示し、高偏光性能をもつ偏光フィルムを
製造できるが、力学的特性としてタテ裂けが激しく、又
光面肌荒れに起因して濁ったフィルムとなるため、透明
樹脂フィルムで片面または両面を保護すれば、さらに改
良された偏光板となる。If the first composition consisting of the above thermotropic liquid crystal compound and dichroic dye is melt-formed into a film under shearing and drafting, it will show a high degree of molecular orientation and a polarizing film with high polarization performance can be produced. Characteristically, the polarizing plate is prone to severe vertical tearing and becomes cloudy due to the roughness of the optical surface, so if one or both sides are protected with a transparent resin film, a further improved polarizing plate can be obtained.
本発明の保護層に用いる透明熱可塑性樹脂フィルムは熱
可塑性樹脂で溶融製膜時に透明になるものであればどの
ようなものであっても４いが、好適には、ポリアクリル
系、ポリカーボネート系、ポリアミド系、ポリスチレン
系、ポリエステル系、ポリイミド系、ポリスルフォン系
、ポリオレフィン系、ポリ塩化ビニル系、ポリ酢酸ビニ
ル系等及び前記樹脂群からのｔｓ４体及び前記樹脂群中
２種以上の共重合体、あるいは組成物中から選ばれる。The transparent thermoplastic resin film used for the protective layer of the present invention may be any thermoplastic resin as long as it becomes transparent when melted into a film, but preferably polyacrylic or polycarbonate. , polyamide-based, polystyrene-based, polyester-based, polyimide-based, polysulfone-based, polyolefin-based, polyvinyl chloride-based, polyvinyl acetate-based, etc., and ts4 bodies from the above resin groups and copolymers of two or more types from the above resin groups. , or selected from among the compositions.
又、多層共押出により該保護層を釉層する際、接着適性
、光透過性等を考ＭＬ、保康層を一層以上の多層にして
もよく、又ポリエチレン、ポリプロピレン、ポリーダー
メチルペンティ、ボジ−３−メチルブテンなどのポリオ
レフィン系樹脂を使用する場合においては、偏光フィル
ムとの接着性を向上させるため、ポリオレフィンに無水
マレイン酸をグラフト重合した父性ポリオレフィン（Ａ
）あるいは（Ａ）と未変性のポリオレフィンからなる組
成物を使用することが好ましい。In addition, when applying a glaze layer to the protective layer by multilayer coextrusion, adhesive suitability, light transmittance, etc. may be considered. - When using a polyolefin resin such as 3-methylbutene, in order to improve the adhesion with the polarizing film, a paternal polyolefin (A
) or (A) and an unmodified polyolefin.
本発明に使用される二色性色素は、その分子構造上二色
性を有する直接染料、分散染料、酸性染料などの中から
選ばれ、その−例を挙げれば次のような構造式を有する
ものである。The dichroic dye used in the present invention is selected from direct dyes, disperse dyes, acid dyes, etc., which have dichroism in their molecular structure, and has the following structural formula, for example. It is something.
Ｃｌ−７３ ０Ｈ リ ０ｋｉ ０ ＮＨ。Cl-73 0H Re0ki 0 NH.
ＮＨ，Ｕ ０Ｈ
Ｎｏ ＯＯＨ
０洲２
Ｏ聞
二色性色素は、上記したようなものを一株類あるいは数
種類の混合物として用いれば良い。NH, U 0 H No OOH 0 S 2 O As the dichroic dye, the above-mentioned ones may be used as a single strain or a mixture of several types.
使用方法は、例えばポリエステル樹脂とトライブレンド
、溶融ブレンド、溶媒混合等の方法で混合して用いる。The method of use is, for example, by mixing it with a polyester resin by methods such as triblending, melt blending, and solvent mixing.
二色性色素の混合量としては０．０ ／重量慢以上１０
重ｆ％未満の間から選ばれるのが好ましい０
本発明における多層共押出は偏光フィルム層となるサー
モトロピック液晶性高分子化合物と二色性色素からなる
押出層に適当なせん断とドラフトがかかればよく、ダイ
内積層のＴダイ法、ダイ外積層のＴダイ法、ダイ内積層
のイ／７し法、ダイ外積層のインフレ法などいずれも実
用に供することができる。The amount of dichroic dye mixed is 0.0/more than 10
The multilayer coextrusion in the present invention is preferably selected from less than F% by weight. In general, any of the T-die method for stacking inside the die, the T-die method for stacking outside the die, the A/7 method for stacking inside the die, and the inflation method for stacking outside the die can be put to practical use.
多Ｆ？５共押出法の特徴はコ台以上の押出し機を用いて
可塑化した異種の合成樹脂を溶融して７組の共通ダイに
導き、ダイの内部またはダイの開口部において積層し、
多層の積層フィルムを／工程で生産できることにあり、
このことは従来の偏光板が偏光フィルム製造後接着剤を
介して保膜フィルムをラミネートしていたのに比較して
■工程の簡略化にともなう製造コストの低減、■接着剤
層における泡の発生及び接着ムラによる偏光能の低下の
解消；等の面で長所となる０
このようにサーモトロピック液晶性高分子化合物の溶融
配向性を利用して多層共押出法の７エ程で多Ｒ１１構造
の偏光板を製造できる効果は大きい。また、場合によっ
ては共押出後、延伸、熱処理等の工程を追加することも
可能である。Many F? 5.The characteristics of the coextrusion method are that different types of plasticized synthetic resins are melted using an extruder with a size larger than 1,000 yen, and introduced into seven sets of common dies.
The ability to produce multi-layer laminated films in one process,
Compared to conventional polarizing plates, in which a protective film is laminated with an adhesive after the polarizing film is manufactured, this means: - reduction in manufacturing costs due to simplification of the process; and - generation of bubbles in the adhesive layer. This has advantages in terms of eliminating the decrease in polarization ability due to uneven adhesion; etc. In this way, using the melt orientation of thermotropic liquid crystalline polymer compounds, a multi-R11 structure can be created in 7 steps of the multilayer coextrusion method. The effect of manufacturing polarizing plates is significant. Further, depending on the case, it is also possible to add steps such as stretching and heat treatment after coextrusion.
以上のようにして得られた偏光板は偏光フィルムの素材
であるサーモトロピック液晶性高分子化合物がそれ自体
ですぐれた耐熱、耐湿、耐候性を有しているので、該偏
光フィルムからなる多層構造の偏光板は高温、高湿度の
条件下において偏光性能の低下を起こさず又、すぐれた
力学的性質を有している。又、該偏光板は種々の加工を
施して使用することが出来る。例えばフィルムまたはシ
ートとしてそのまま使用する他、使用目的によっては偏
光板の表面に蒸着、スパッタリングまたは塗布法により
イシジウムースズ系酸化物等の透明導電性膜を形成して
実用に供することもできる。The polarizing plate obtained as described above has a multilayer structure made of the polarizing film because the thermotropic liquid crystalline polymer compound that is the material of the polarizing film itself has excellent heat resistance, moisture resistance, and weather resistance. The polarizing plate does not deteriorate its polarizing performance under conditions of high temperature and high humidity, and also has excellent mechanical properties. Further, the polarizing plate can be used after being subjected to various processing. For example, in addition to being used as is as a film or sheet, depending on the purpose of use, a transparent conductive film of isidium-tin oxide or the like may be formed on the surface of the polarizing plate by vapor deposition, sputtering, or coating for practical use.
以下実施例を挙げて本発明を説明するが本発明はその要
旨を越え々い限り以下の実施例に限定されるものではな
い。The present invention will be described below with reference to examples, but the present invention is not limited to the following examples as long as it goes beyond the gist of the invention.
実施例に先だって下記項目の測定法について記載する。Prior to the examples, methods for measuring the following items will be described.
偏光度・・・日立自記分光光度計（Ｕ−３１１００形）
を用いて一枚の偏光板を偏光軸を平
行に１ねた時の平行光線透過率（Ｈ，ハ、直交に重ねた
時の平行光線透過率
（Ｈよ）を測定し、これらの透過率を下式に当てはめて
測定した。Polarization degree: Hitachi self-recording spectrophotometer (U-31100 type)
Measure the parallel light transmittance (H, C) when one polarizing plate is stacked with the polarization axis parallel to each other using It was measured by applying it to the following formula.
実施例／）
ポリエチレンテレフタレートオリゴマー（ηｉｎｈ Ｏ
，／ Ｏｄｉ／ｌ ） ／ ００部とバラヒドロキシ安
息香酸λｇｔ部及び酢酸第１錫００７３部とを２２０℃
で窒素気流下／時間攪拌し、次に温度を７９０℃に降下
後無水酢酸λ６６部を添加し７時間３０分攪拌した。Example/) Polyethylene terephthalate oligomer (ηinh O
, / Odi/l ) / 00 parts, λgt part of rose hydroxybenzoic acid and 0073 parts of stannous acetate at 220°C.
The mixture was stirred for an hour under a nitrogen stream, and then the temperature was lowered to 790°C, after which 66 parts of acetic anhydride λ was added and the mixture was stirred for 7 hours and 30 minutes.
酢酸を溜出させながらコア３℃に温度を上げ、酢酸亜鉛
二水和物０．２．３部を酢加した後θ、３ｔｏｒｒまで
徐々に減圧にして６時間攪拌し重合を完了した。The temperature of the core was raised to 3° C. while acetic acid was being distilled out, and 0.2.3 parts of zinc acetate dihydrate was added with acetic acid. The pressure was gradually reduced to θ and 3 torr, and the mixture was stirred for 6 hours to complete polymerization.
得られた重合物の組成はポリエチレンテレフタレート成
分が２０モルチパラヒドロキシ安息香酸成分がｔＯモル
チであり又、ヒートステージを装着した偏光顕微鏡下で
溶融特異方性を示すことを確認した。The composition of the obtained polymer was 20 moles of polyethylene terephthalate component and 10 moles of parahydroxybenzoic acid component, and it was confirmed that it exhibited melting singularity under a polarizing microscope equipped with a heat stage.
このようにして得られたサーモトロピック液晶性樹脂に
下記式で示される色素をヘンシェルミキサーで０．７重
量パーセントの割合で混合したのち３０ｗｎφ押出機に
て２７５℃で押出し、ペレット化し、色素ブレンドチッ
プを得た。The thermotropic liquid crystal resin thus obtained was mixed with a dye represented by the following formula at a ratio of 0.7% by weight using a Henschel mixer, and then extruded at 275°C using a 30wnφ extruder to form pellets into dye blend chips. I got it.
この色素ブレンドチップとポリカーボネート樹脂（三菱
化成Ｎ０ＶＡＲＦ、Ｘ ７０２０ｋ ）をダイ内Ｔダイ
三層共押出し装置により、内層色素ブレンド、サーモト
ロピック液晶性樹脂、外層ポリカーボネート樹脂からな
る三層の偏光板を作成した。This dye blend chip and polycarbonate resin (Mitsubishi Kasei N0VARF, .
ダイ巾２００ｗｍ、ダイ温度コアｊＣ；色素ブレンドサ
ーモトロピック液晶性樹脂側押出機３０朋φ、Ｌ／Ｄ
＝ ２０、温度２７５℃；ポリカーボネート側押出機ｑ
ｏ藺φ、Ｌ／Ｄ ＝−ダ、温度、２７５℃で共押出した
。Die width 200wm, die temperature core jC; dye blend thermotropic liquid crystal resin side extruder 30mmφ, L/D
= 20, temperature 275°C; polycarbonate side extruder q
Coextrusion was carried out at a temperature of 275°C.
引き取り速度３３粉−、ドローアップ比／θ、色素ブレ
ンドサーモトロピック液晶性樹脂フィルム厚み１０μ、
ポリカーボネート樹脂フィルム厚み２ｊμである。Take-up speed: 33 powder, draw-up ratio/θ, pigment blend thermotropic liquid crystal resin film thickness: 10μ,
The thickness of the polycarbonate resin film is 2Jμ.
こうして得られた偏光板の性能は、使用色素の特性吸収
波長６１ｔ Ｏｎｍで単体透過率３１転偏光度７ｑ％で
あり、又タテ裂けのない力学的強度の優れた偏光板であ
った。The performance of the polarizing plate thus obtained was that the characteristic absorption wavelength of the dye used was 61 t Onm, the single transmittance was 31, and the polarization degree was 7 q%, and the polarizing plate had excellent mechanical strength without vertical tearing.
実施例コ）
ポリメチルペンテン樹脂（三井石油化学ＴＰＸＲＴ−／
ｌ ）に無水マレイン酸を０．７重量部、コ、Ｓ−ジメ
チルーＪｊジターシャリブチルオキシ−へキシル−３を
Ｏ０Ｏコ重量部配合シ、３０闘φ押出機２１，０℃で押
出し、チップ化して無水マレイン酸がグラフトされた変
性ポリメチルペンテン樹脂を得た。Example) Polymethylpentene resin (Mitsui Petrochemical TPXRT-/
1), 0.7 parts by weight of maleic anhydride, and 00 parts by weight of S-dimethyl-Jj ditertiary butyloxy-hexyl-3 were extruded using a 30mm extruder at 21.0°C to form chips. A modified polymethylpentene resin grafted with maleic anhydride was obtained.
次に実施例／）と同様の方法、条件にて内層実施例／）
で使用した色素ブレンドサーモトロピック液晶性樹脂、
外層変性ポリメチルペンテン樹脂で三層共押出しして偏
光板を得た。Next, the inner layer was carried out using the same method and conditions as Example /).
Pigment blend thermotropic liquid crystal resin used in
A polarizing plate was obtained by coextruding three layers using modified polymethylpentene resin as the outer layer.
こうして得られた偏光板の性能は使用色素の特性吸収波
長Ａ Ｉ！： Ｏｎｒｎで単体透過率ｌＩｏ％、偏光度
１０％であり、又タテ裂けのない力学的強度の優れた偏
光板であった。The performance of the polarizing plate obtained in this way is determined by the characteristic absorption wavelength A I! of the dye used. : Onrn, the single transmittance was 1Io%, the degree of polarization was 10%, and the polarizing plate had excellent mechanical strength without vertical tearing.
比較例１）
実施例／）で使用した色素ブレンドサーモトロビック液
晶性樹脂を一層Ｔダイ（ダイ巾２００鴨、リップクリア
ランス０．２圏）を備えた３０晴φ押出機を用いて温度
コクＳ℃、ドローアンプ比１０で１０μ厚みの偏光フィ
ルムを溶融製膜した。Comparative Example 1) The dye blend thermotropic liquid crystal resin used in Example/) was heated to a temperature of S using a 30 mm diameter extruder equipped with a T die (die width 200 mm, lip clearance 0.2 mm). A polarizing film having a thickness of 10 μm was melt-formed at a temperature of 10° C. and a draw amplifier ratio of 10.
この偏光フィルムの性能は、６ざＯｎｍで単体透過率３
３％、偏光度７５％で実施例／）、コ）と比較して透過
率が低く、又タテ裂けの激しいフィルムであった。The performance of this polarizing film is that the single transmittance is 3 at 6 Onm.
3% and a polarization degree of 75%, the transmittance was lower than that of Examples/) and (c), and the film had severe vertical tearing.
本発明によれば簡便な方法で偏光性能、力学的強度等に
優れたサーモトロピック液晶性高分子化合物を素材とす
る偏光板を得ることができ、実用上大変効果的である。According to the present invention, a polarizing plate made of a thermotropic liquid crystalline polymer compound having excellent polarization performance, mechanical strength, etc. can be obtained by a simple method, and is very effective in practice.
出 願 人 三菱化成工業株式会社 代 理 人 弁理士長香川 − （ほか１名）Sender: Mitsubishi Chemical Industries, Ltd. Representative Patent Attorney Naga Kagawa - (1 other person)
Claims (2)
素よりなる偏光フィルムの少なくとも片面に透明熱可塑
性樹脂フィルムからなる保護層を積層した偏光板(1) A polarizing plate comprising a polarizing film made of a thermotropic liquid crystalline polymer compound and a dichroic dye, and a protective layer made of a transparent thermoplastic resin film laminated on at least one side of the polarizing film.
素を添加した偏光性樹脂組成物と透明熱可塑性樹脂とを
別々に混練溶融した後、共押出ダイから偏光性樹脂組成
物の層の少なくとも片面に透明熱可塑性樹脂の層を共押
出することを特徴とする偏光板の製造方法。(2) After separately kneading and melting a polarizing resin composition in which a dichroic dye is added to a thermotropic liquid crystalline polymer compound and a transparent thermoplastic resin, a layer of the polarizing resin composition is formed from a coextrusion die. A method for producing a polarizing plate, comprising coextruding a layer of transparent thermoplastic resin on at least one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20544686A JPS6361203A (en) | 1986-09-01 | 1986-09-01 | Polarizing plate and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20544686A JPS6361203A (en) | 1986-09-01 | 1986-09-01 | Polarizing plate and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6361203A true JPS6361203A (en) | 1988-03-17 |
Family
ID=16507013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20544686A Pending JPS6361203A (en) | 1986-09-01 | 1986-09-01 | Polarizing plate and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6361203A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100310164B1 (en) * | 1995-11-27 | 2001-12-28 | 구광시 | Polarizing film and preparation method thereof |
| US6814896B2 (en) | 1995-03-03 | 2004-11-09 | Vision-Ease Lens, Inc. | Production of optical elements |
| US7326373B2 (en) | 2003-05-09 | 2008-02-05 | Younger Mfg. Co. | Method for forming a wafer for use in an optical part |
| US9981453B2 (en) | 2003-09-09 | 2018-05-29 | Vision Ease, Lp | Photochromic polyurethane laminate |
| US10145997B2 (en) | 2015-10-30 | 2018-12-04 | Sumitomo Chemical Company, Limited | Polarizing plate and polarizing plate assembly |
| CN109844582A (en) * | 2016-10-14 | 2019-06-04 | 住友化学株式会社 | Polarizing film, polarization plates and image display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5397851A (en) * | 1977-02-07 | 1978-08-26 | Nitto Electric Ind Co | Light bending plate |
| JPS58102204A (en) * | 1981-12-14 | 1983-06-17 | Seiko Epson Corp | Formation of color polarizing plate |
| JPS615204A (en) * | 1984-06-20 | 1986-01-11 | Toray Ind Inc | Polarizing film |
-
1986
- 1986-09-01 JP JP20544686A patent/JPS6361203A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5397851A (en) * | 1977-02-07 | 1978-08-26 | Nitto Electric Ind Co | Light bending plate |
| JPS58102204A (en) * | 1981-12-14 | 1983-06-17 | Seiko Epson Corp | Formation of color polarizing plate |
| JPS615204A (en) * | 1984-06-20 | 1986-01-11 | Toray Ind Inc | Polarizing film |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6814896B2 (en) | 1995-03-03 | 2004-11-09 | Vision-Ease Lens, Inc. | Production of optical elements |
| US7048997B2 (en) | 1995-03-03 | 2006-05-23 | Vision-Ease Lens | Production of optical elements |
| KR100310164B1 (en) * | 1995-11-27 | 2001-12-28 | 구광시 | Polarizing film and preparation method thereof |
| US7326373B2 (en) | 2003-05-09 | 2008-02-05 | Younger Mfg. Co. | Method for forming a wafer for use in an optical part |
| US9981453B2 (en) | 2003-09-09 | 2018-05-29 | Vision Ease, Lp | Photochromic polyurethane laminate |
| US9981452B2 (en) | 2003-09-09 | 2018-05-29 | Vision Ease, Lp | Photochromic polyurethane laminate |
| US10052849B2 (en) | 2003-09-09 | 2018-08-21 | Vision Ease, Lp | Photochromic polyurethane laminate |
| US11420426B2 (en) | 2003-09-09 | 2022-08-23 | Hoya Optical Labs Of America, Inc. | Photochromic polyurethane laminate |
| US10145997B2 (en) | 2015-10-30 | 2018-12-04 | Sumitomo Chemical Company, Limited | Polarizing plate and polarizing plate assembly |
| US11009639B2 (en) | 2015-10-30 | 2021-05-18 | Sumitomo Chemical Company, Limited | Polarizing plate and polarizing plate assembly |
| CN109844582A (en) * | 2016-10-14 | 2019-06-04 | 住友化学株式会社 | Polarizing film, polarization plates and image display device |
| CN109844582B (en) * | 2016-10-14 | 2021-06-08 | 住友化学株式会社 | Polarizing plate, and image display device |
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