JPH0679093B2 - Polarizer - Google Patents
PolarizerInfo
- Publication number
- JPH0679093B2 JPH0679093B2 JP59281742A JP28174284A JPH0679093B2 JP H0679093 B2 JPH0679093 B2 JP H0679093B2 JP 59281742 A JP59281742 A JP 59281742A JP 28174284 A JP28174284 A JP 28174284A JP H0679093 B2 JPH0679093 B2 JP H0679093B2
- Authority
- JP
- Japan
- Prior art keywords
- trade name
- manufactured
- film
- polarizing
- polarizing plate
- 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.)
- Expired - Fee Related
Links
- 230000001681 protective effect Effects 0.000 claims description 16
- 229920005749 polyurethane resin Polymers 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- SPBDXSGPUHCETR-JFUDTMANSA-N 8883yp2r6d Chemical compound O1[C@@H](C)[C@H](O)[C@@H](OC)C[C@@H]1O[C@@H]1[C@@H](OC)C[C@H](O[C@@H]2C(=C/C[C@@H]3C[C@@H](C[C@@]4(O[C@@H]([C@@H](C)CC4)C(C)C)O3)OC(=O)[C@@H]3C=C(C)[C@@H](O)[C@H]4OC\C([C@@]34O)=C/C=C/[C@@H]2C)/C)O[C@H]1C.C1C[C@H](C)[C@@H]([C@@H](C)CC)O[C@@]21O[C@H](C\C=C(C)\[C@@H](O[C@@H]1O[C@@H](C)[C@H](O[C@@H]3O[C@@H](C)[C@H](O)[C@@H](OC)C3)[C@@H](OC)C1)[C@@H](C)\C=C\C=C/1[C@]3([C@H](C(=O)O4)C=C(C)[C@@H](O)[C@H]3OC\1)O)C[C@H]4C2 SPBDXSGPUHCETR-JFUDTMANSA-N 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 8
- 229920000728 polyester Polymers 0.000 claims description 7
- 229920002959 polymer blend Polymers 0.000 claims description 6
- 150000002596 lactones Chemical class 0.000 claims description 5
- 229920006347 Elastollan Polymers 0.000 claims description 3
- SMEGJBVQLJJKKX-HOTMZDKISA-N [(2R,3S,4S,5R,6R)-5-acetyloxy-3,4,6-trihydroxyoxan-2-yl]methyl acetate Chemical compound CC(=O)OC[C@@H]1[C@H]([C@@H]([C@H]([C@@H](O1)O)OC(=O)C)O)O SMEGJBVQLJJKKX-HOTMZDKISA-N 0.000 claims description 3
- 229940081735 acetylcellulose Drugs 0.000 claims description 3
- 229920002301 cellulose acetate Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000004014 plasticizer Substances 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- 230000010287 polarization Effects 0.000 description 6
- 238000002845 discoloration Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000004042 decolorization Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000003014 phosphoric acid esters Chemical class 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 2
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000021736 acetylation Effects 0.000 description 1
- 238000006640 acetylation reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、電子時計、電子卓上計算器、自動車の計器
表示盤などの液晶表示板として用いられる偏光板に関す
るものである。Description: TECHNICAL FIELD The present invention relates to a polarizing plate used as a liquid crystal display plate for electronic timepieces, electronic desk calculators, instrument display panels for automobiles, and the like.
従来技術およびその問題点 一般にこの種の偏光板は、ポリビニルアルコールフィル
ムよりなる偏光膜の少なくとも片面にアセチルセルロー
ス（以下、ACと略記する）フィルムよりなる保護膜を貼
着したものであって、従来は、保護膜用ACフィルムの可
塑剤としてトリフェニルホスフェートその他のリン酸エ
ステル系のものを用いていた。しかしこの種の可塑剤を
用いた場合、得られた偏光板をたとえば自動車の計器表
示盤などの液晶表示板として用いると、偏光板に白濁、
変色、脱色などが生じて偏光性能が著しく低下したり、
また偏光膜から保護膜が剥がれるという問題が生じた。
この原因は、明確ではないが、一応つぎのように考えら
れる。すなわち、自動車の計器表示盤などの液晶表示板
は、液晶を封入した密閉ガラス容器に貼着されて使用さ
れるため、高温多湿の厳しい環境に長時間置かれ、その
結果、保護膜中のリン酸エステル系可塑剤が気化し、保
護膜の表面が凹凸面となり白濁する。また上記のような
環境下において吸湿が進行し、ACフィルムが加水分解を
きたして酢酸を発生し、この酢酸が偏光膜に含まれてい
る偏光用染料を変色ないし脱色する。さらにリン酸エス
テル系可塑剤は、保護膜から接着層や偏光膜へ移行しや
すく、偏光膜への保護膜の接着力が著しく弱まり、ひい
ては剥離が生じる。Conventional Technology and Problems Thereof In general, this type of polarizing plate has a protective film made of an acetyl cellulose (hereinafter abbreviated as AC) film attached to at least one surface of a polarizing film made of a polyvinyl alcohol film. Used triphenyl phosphate and other phosphoric acid ester based plasticizers for the AC film for protective film. However, when this type of plasticizer is used, when the obtained polarizing plate is used as a liquid crystal display plate such as an automobile instrument display panel, the polarizing plate becomes cloudy,
Discoloration, decolorization, etc. may occur and the polarization performance may be significantly reduced.
In addition, there is a problem that the protective film is peeled off from the polarizing film.
The reason for this is not clear, but it can be considered as follows. In other words, liquid crystal display panels such as automobile instrument display panels are used by sticking them to a hermetically sealed glass container in which liquid crystal is sealed, so they are placed in a severe environment of high temperature and high humidity for a long time, and as a result, the phosphorus in the protective film is The acid ester plasticizer is vaporized and the surface of the protective film becomes uneven and becomes cloudy. Further, under the above-mentioned environment, moisture absorption progresses, the AC film hydrolyzes to generate acetic acid, and the acetic acid discolors or decolorizes the polarizing dye contained in the polarizing film. Furthermore, the phosphoric acid ester-based plasticizer easily migrates from the protective film to the adhesive layer or the polarizing film, the adhesive force of the protective film to the polarizing film is significantly weakened, and peeling occurs.
この発明は、上記の点に鑑みてなされたものであって、
保護膜のフィルムとして、ACに特定のポリウレタン樹脂
を配合したポリマーブレンドから形成したフィルムを用
いることにより、高温多湿の厳しい条件下においても上
記のように偏光板の白濁、変色、脱色などが生じたり、
偏光膜と保護膜の剥離をきたすおそれの全くない偏光板
を提供することを目的とする。This invention has been made in view of the above points,
By using a film made of a polymer blend in which AC is blended with a specific polyurethane resin as the protective film, the above-mentioned white turbidity, discoloration, discoloration of the polarizing plate may occur even under severe conditions of high temperature and high humidity. ,
It is an object of the present invention to provide a polarizing plate having no possibility of causing peeling of a polarizing film and a protective film.
問題点の解決手段 この発明による偏光板は、上記の目的達成のために、偏
光膜の少なくとも片面にACフィルムよりなる保護膜を貼
着してなる偏光板において、上記フィルムを、ACとOH価
50以下で分子量5000以下のポリエステル系またはラクト
ン系ポリウレタン樹脂とのポリマーブレンドから形成し
たことを特徴とする。In order to achieve the above object, the polarizing plate according to the present invention is a polarizing plate in which a protective film made of an AC film is attached to at least one surface of a polarizing film.
It is characterized by being formed from a polymer blend with a polyester or lactone polyurethane resin having a molecular weight of 50 or less and a molecular weight of 5000 or less.
偏光膜は合成樹脂フィルムに通常の偏光処理を施したも
ので、たとえばポリビニルアルコールフィルムを偏光用
染料で染色し、ついで染色フィルムを所要倍に延伸する
か、または予め延伸したポリビニルアルコールフィルム
を染色したものである。The polarizing film is obtained by subjecting a synthetic resin film to ordinary polarization treatment, for example, a polyvinyl alcohol film is dyed with a polarizing dye, and then the dyed film is stretched to a required length, or a pre-stretched polyvinyl alcohol film is dyed. It is a thing.
ACにポリマーブレンドするポリウレタン樹脂が、ポリエ
ステル系またはラクトン系の樹脂に限定される理由は、
これら樹脂以外のもの、たとえばポリエーテル系または
ポリカーボネート系の樹脂の場合、ACとの相溶性がよく
なく、そのため得られたポリマーブレンドが濁りを生じ
てフィルムの透明性の低下をまねくためである。またポ
リウレタン樹脂のOH価が50以下にかつ分子量が5000以下
に限定される理由は、OH価または分子量が上記値を越え
た場合には、ポリマーブレンドから形成されたフィルム
が硬いものとなり、そのためフィルムが機械的強度の点
では問題ないが、表面が平滑にならないために、偏光膜
の保護膜として使用できないためである。The reason why the polyurethane resin to be polymer blended with AC is limited to polyester-based or lactone-based resin is
This is because, in the case of a resin other than these resins, for example, a polyether-based or polycarbonate-based resin, the compatibility with AC is not good, so that the obtained polymer blend becomes turbid and the transparency of the film is deteriorated. Further, the reason why the OH value of the polyurethane resin is limited to 50 or less and the molecular weight is 5000 or less is that when the OH value or the molecular weight exceeds the above value, the film formed from the polymer blend becomes hard, and therefore the film Although there is no problem in terms of mechanical strength, it cannot be used as a protective film for the polarizing film because the surface does not become smooth.
ポリエステル系のポリウレタン樹脂の例としては、商品
名デスモパン385（バイエル社製）、商品名テキシン480
A（モーベイケミカル社製）、商品名テキシン985A（モ
ーベルケミカル社製）、商品名パンデックスＴ−5265
（大日本インキ化学工業社製）、商品名パンデックスＴ
−5880（大日本インキ化学工業社製）、商品名エラスト
ランＥ−185FNAT（日本エラストラン社製）、商品名パ
ラプレンＰ−22MRNAT（日本ポリウレタン工業社製）、
商品名サイアナブレンＡ−７（アメリカンサイアナミッ
ド社製）、商品名ブルコラン18（バイエル社製）および
商品名ログランR80（井上エムテーピー社製）が挙げら
れ、またラクトン系のポリウレタンの例としては、商品
名パンデックスＴ−5000（大日本インキ化学工業社
製）、商品名レザミンＰ−4060（大日精化学工業社製）
および商品名ペレセン2102−80A（化成アップジョン社
製）が挙げられる。Examples of polyester-based polyurethane resin include Desmopan 385 (Bayer) and Texin 480.
A (manufactured by Mobay Chemical Co.), trade name Texin 985A (manufactured by Mobel Chemical Co.), trade name Pandex T-5265
(Manufactured by Dainippon Ink and Chemicals, Inc.), trade name Pandex T
-5880 (manufactured by Dainippon Ink and Chemicals Incorporated), trade name Elastollan E-185FNAT (manufactured by Nippon Elastran Co., Ltd.), trade name Paraprene P-22MRNAT (manufactured by Nippon Polyurethane Industry Co., Ltd.),
Trade name Sianabren A-7 (manufactured by American Cyanamid), trade name Vulkollan 18 (manufactured by Bayer) and trade name Loglan R80 (manufactured by Inoue MTP) are listed, and examples of lactone-based polyurethane are products. Name Pandex T-5000 (manufactured by Dainippon Ink and Chemicals, Inc.), trade name Resamine P-4060 (manufactured by Dainichi Seikagaku, Inc.)
And trade name Peresen 2102-80A (manufactured by Kasei Upjohn Co.).
これらポリウレタン樹脂は単独で用いてもまた２以上の
組合せで用いてもよい。These polyurethane resins may be used alone or in combination of two or more.
ACにポリマーブレンドするポリウレタン樹脂の配合量
は、特に限定されないが、通常AC100重量部に対してポ
リウレタン樹脂５〜30重量部の割合である。The blending amount of the polyurethane resin to be polymer blended with AC is not particularly limited, but is usually 5 to 30 parts by weight of polyurethane resin with respect to 100 parts by weight of AC.
発明の効果 以下の次第で、この発明によれば、フィルムを、ACとOH
価50以下で分子量5000以下のポリエステル系またはラク
トン系ポリウレタン樹脂とのポリマーブレンドから形成
するので、高温多湿の厳しい条件下においても白濁、変
色、脱色などを生じたり、偏光膜と保護膜の剥離をきた
すおそれが全くない偏光板を得ることができる。Effects of the Invention According to the present invention, the film is treated with AC and OH depending on the following.
Since it is formed from a polymer blend with a polyester or lactone polyurethane resin with a valence of 50 or less and a molecular weight of 5000 or less, it can cause clouding, discoloration, decolorization, etc. even under severe conditions of high temperature and high humidity, and peeling of the polarizing film and the protective film. It is possible to obtain a polarizing plate having no possibility of causing damage.
実施例 つぎに、この発明の具体例を例示し、上記効果を実証す
るために、この発明の実施例を挙げ、さらに比較のため
に従来技術に対応する比較例を挙げる。Examples Next, examples of the present invention will be illustrated, examples of the present invention will be given to demonstrate the above effects, and comparative examples corresponding to conventional techniques will be given for comparison.
実施例１ 厚さ75μのポリビニルアルコールフィルムを二色性染料
（商品名「カヤクダイレクトファーストブラックＤ」、
日本化薬社製）で染色し、染色フィルムを延伸すること
により、20μの偏光膜を形成した。Example 1 A polyvinyl alcohol film having a thickness of 75 μ was coated with a dichroic dye (trade name “Kayak Direct First Black D”,
It was dyed with Nippon Kayaku Co., Ltd., and the dyed film was stretched to form a 20 μ polarizing film.
また酢化度60％のトリアセチルセルロース100重量部を
メチレンクロライド・メタノール（88:12）の混合溶剤4
70重量部に溶解した溶液と、商品名デスモパン358ペレ
ット（バイエル社製）なるポリエステル系ポリウレタン
樹脂をメチレンクロライドに10重量％溶解した溶液100
重量部とを混合し、混合液をガラス板上に流して乾燥
し、厚さ80μのフィルムを形成した。Also, 100 parts by weight of triacetyl cellulose having an acetylation degree of 60% is mixed with a methylene chloride / methanol (88:12) mixed solvent 4
A solution prepared by dissolving 70 parts by weight of a polyester-based polyurethane resin having a trade name of Desmopan 358 pellets (manufactured by Bayer) in methylene chloride 100% by weight.
Part by weight was mixed, and the mixed solution was poured onto a glass plate and dried to form a film having a thickness of 80μ.
このフィルムを偏光膜の保護膜として偏光膜の両面に透
明のアクリル系接着剤で貼着した。こうして偏光板を作
成した。This film was used as a protective film for the polarizing film and was attached to both sides of the polarizing film with a transparent acrylic adhesive. Thus, a polarizing plate was prepared.
実施例２および３ ポリウレタン樹脂として実施例１で用いた樹脂の代わり
に、商品名パンデックスＴ−5265ペレット（大日本イン
キ化学工業社製）および商品名パンデックスＴ−5000ペ
レット（大日本インキ化学工業社製）なる２種の樹脂を
それぞれ用いる点を除いて、実施例１と同じ操作を繰返
し、それぞれ偏光板を作成した。Examples 2 and 3 Instead of the resin used in Example 1 as the polyurethane resin, trade name Pandex T-5265 pellets (manufactured by Dainippon Ink and Chemicals Incorporated) and trade name Pandex T-5000 pellets (Dainippon Ink Chemicals) The same operation as in Example 1 was repeated except that two kinds of resins (made by Kogyo Co., Ltd.) were used, and polarizing plates were prepared.
比較例１〜３ ポリウレタン樹脂として実施例１で用いた樹脂の代わり
に、商品名デスモフェン1100（バイエル社製）なる樹脂
と商品名日ポリＬ−75（日本ポリエステル社製）なる樹
脂の混合物をそれぞれ硬化させついで粉砕した粉末、商
品名パンデックスＴ−6085ペレット（大日本インキ化学
工業社製）および可塑剤トリフェニルホスフェートをそ
れぞれ用いる点を除いて、実施例１と同じ操作を繰返
し、それぞれ偏光板を作成した。Comparative Examples 1 to 3 Instead of the resin used in Example 1 as the polyurethane resin, a mixture of a resin having a trade name of Desmophen 1100 (manufactured by Bayer) and a resin having a trade name of Nipoly L-75 (manufactured by Nippon Polyester Co., Ltd.) is used. The same operation as in Example 1 was repeated except that a powder which was cured and then ground, a trade name Pandex T-6085 pellet (manufactured by Dainippon Ink and Chemicals, Inc.) and a plasticizer triphenyl phosphate were used, respectively, and a polarizing plate was used. It was created.
偏光板の耐熱耐湿試験および特性試験 実施例１〜３および比較例１〜３で得られた各偏光板を
それぞれ5cm×7cmのサイズに切断し、得られた切断片を
それぞれ5.5cm×8cmのガラス板の中央部にアクリル系粘
着剤で仮貼着し、ついでこれらを押圧して各片とガラス
板の間の気泡を完全に除去できるようにして各切断片を
ガラス板に貼着した。こうして形成した試験片をそれぞ
れ、温度80℃、湿度95％にセットした恒温恒湿オーブン
内に、互いに重ならないように垂直に配して支持枠に固
定した。こうして試験片を所要時間保持した後、各片に
ついてそれぞれ（Ａ）偏光板の変色、（Ｂ）偏光膜と保
護膜の接着性、（Ｃ）可塑剤の損失による重量変化、
（Ｄ）透過率および（Ｅ）偏光度を測定した。測定結果
を下記表に示す。Heat resistance and humidity resistance test and characteristic test of polarizing plates Each of the polarizing plates obtained in Examples 1 to 3 and Comparative Examples 1 to 3 was cut into a size of 5 cm x 7 cm, and the obtained cut pieces were 5.5 cm x 8 cm, respectively. Each piece was attached to the glass plate by temporarily adhering it to the center of the glass plate with an acrylic pressure-sensitive adhesive and then pressing them so that air bubbles between each piece and the glass plate could be completely removed. The test pieces thus formed were placed vertically in a constant temperature and constant humidity oven set to a temperature of 80 ° C. and a humidity of 95% so as not to overlap each other and fixed to a support frame. After holding the test piece for a required time in this way, for each piece, (A) discoloration of the polarizing plate, (B) adhesiveness between the polarizing film and the protective film, (C) weight change due to loss of the plasticizer,
The transmittance (D) and the degree of polarization (E) were measured. The measurement results are shown in the table below.
表中、（Ａ）偏光板の変色の評価は、色差計（商品名
「カラーコンピュータ」、スガ試験機社製）で測定した
色差変化△Ｅの値（NBS単位）が２以下である場合に○
印、２〜５の範囲である場合に△印、および５以上であ
る場合に×印をそれぞれ付すことにより行なった。 In the table, (A) the evaluation of the color change of the polarizing plate is performed when the value (NBS unit) of the color difference change ΔE measured by a color difference meter (trade name “Color Computer”, manufactured by Suga Test Instruments Co., Ltd.) is 2 or less. ○
It was carried out by adding a mark, a mark in the range of 2 to 5 and a mark in the range of 5 or more.
また、（Ｂ）偏光膜と保護膜の接着性の評価は、肉眼に
より観察を行ない、膜の浮き上がり部分が周辺1mm以下
である場合に○印、１〜3mmの範囲である場合に△印、
および3mm以上である場合に×印をそれぞれ付すことに
より行なった。In addition, (B) the evaluation of the adhesiveness between the polarizing film and the protective film was carried out by visual observation, and when the raised portion of the film was 1 mm or less around the periphery, it was marked with a circle, and when it was in the range of 1 to 3 mm, it was marked with a triangle.
And 3 mm or more were marked with x respectively.
また、（Ｃ）可塑剤の損失による重量変化の評価は、精
密天秤により偏光板の重量を測定し、原片の測定値との
重量変化が5mg以下である場合に○印、５〜20mgの範囲
である場合に△印、および20mgの範囲以上である場合に
×印をそれぞれ付すことにより行なった。The weight change due to the loss of the plasticizer (C) is measured by measuring the weight of the polarizing plate with a precision balance, and when the weight change from the measured value of the original piece is 5 mg or less, a circle mark, 5 to 20 mg It was carried out by marking Δ when the range was within the range and X when the range was 20 mg or more.
また、（Ｄ）透過率および（Ｅ）偏光度の評価は、上記
色差計を用いて常法により透過率および偏光度を測定
し、原片の測定値（43％）との差が±２％以内である場
合に○印、±２％と±５％の間である場合に△印、およ
び±５％を超える場合に×印を付すことにより行なっ
た。Further, the evaluation of the transmittance (D) and the polarization degree (E) was carried out by measuring the transmittance and the polarization degree by the usual method using the color difference meter, and the difference from the measured value (43%) of the original piece was ± 2. When it is within%, it is marked with a circle, when it is between ± 2% and ± 5%, it is marked with Δ, and when it exceeds ± 5%, it is marked with a cross.
上記表から明らかなように、実施例で得られた偏光板は
いずれも耐熱耐湿性にすぐれ、透過率および偏光度が低
下することがないものである。As is apparent from the above table, the polarizing plates obtained in the examples all have excellent heat resistance and humidity resistance, and the transmittance and the degree of polarization do not decrease.
Claims (2)
ース・フィルムよりなる保護膜を貼着してなる偏光板に
おいて、上記フィルムを、アセチルセルロースとOH価50
以下で分子量5000以下のポリエステル系またはラクトン
系ポリウレタン樹脂とのポリマーブレンドから形成した
ことを特徴とする偏光板。1. A polarizing plate comprising a polarizing film and a protective film made of an acetyl cellulose film attached to at least one surface of the polarizing film, wherein the film comprises acetyl cellulose and an OH value of 50.
A polarizing plate characterized by being formed from a polymer blend with a polyester-based or lactone-based polyurethane resin having a molecular weight of 5000 or less.
5（バイエル社製）、商品名テキシン480A（モーベイケ
ミカル社製）、商品名テキシン985A（モーベルケミカル
社製）、商品名パンデックスＴ−5265（大日本インキ化
学工業社製）、商品名パンデックスＴ−5000（大日本イ
ンキ化学工業社製）、商品名パンデックスＴ−5880（大
日本インキ化学工業社製）、商品名エラストランＥ−18
5FNAT（日本エラストラン社製）、商品名パラプレンＰ
−22MRNAT（日本ポリウレタン工業社製）、商品名レザ
ミンＰ−4060（大日精化学工業社製）、商品名ペレセン
2102−80A（化成アップジョン社製）、商品名サイアナ
ブレンＡ−７（アメリカンサイアナミッド社製）、商品
名ブルコラン18（バイエル社製）および商品名ログラン
R80（井上エムテーピー社製）よりなる群から選ばれた
樹脂である特許請求の範囲第１項記載の偏光板。2. A polyurethane resin having a trade name of Desmopan 38
5 (made by Bayer), trade name Texin 480A (made by Mobay Chemical Co.), trade name Texin 985A (made by Mobel Chemical Co., Ltd.), trade name Pandex T-5265 (made by Dainippon Ink and Chemicals Co., Ltd.), trade name Pandex T-5000 (manufactured by Dainippon Ink and Chemicals, Inc.), trade name Pandex T-5880 (manufactured by Dainippon Ink and Chemicals, Inc.), trade name Elastollan E-18
5FNAT (manufactured by Japan Elastollan), trade name Paraprene P
-22MRNAT (manufactured by Nippon Polyurethane Industry Co., Ltd.), trade name Resamine P-4060 (manufactured by Dainichi Seikagaku Co., Ltd.), trade name Peresen
2102-80A (manufactured by Kasei Upjohn Co., Ltd.), trade name Sianabren A-7 (manufactured by American Cyanamid Co., Ltd.), trade name Brucolan 18 (manufactured by Bayer Co.) and trade name Loglan
The polarizing plate according to claim 1, which is a resin selected from the group consisting of R80 (manufactured by Inoue MTP Corporation).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59281742A JPH0679093B2 (en) | 1984-12-25 | 1984-12-25 | Polarizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59281742A JPH0679093B2 (en) | 1984-12-25 | 1984-12-25 | Polarizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61151502A JPS61151502A (en) | 1986-07-10 |
| JPH0679093B2 true JPH0679093B2 (en) | 1994-10-05 |
Family
ID=17643348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59281742A Expired - Fee Related JPH0679093B2 (en) | 1984-12-25 | 1984-12-25 | Polarizer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0679093B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4801419B2 (en) * | 2005-11-04 | 2011-10-26 | 日東電工株式会社 | Polarizer |
| JP4631887B2 (en) * | 2007-08-29 | 2011-02-16 | コニカミノルタホールディングス株式会社 | Method for producing polarizing plate protective film |
| JP4631888B2 (en) * | 2007-08-29 | 2011-02-16 | コニカミノルタホールディングス株式会社 | Method for producing polarizing plate protective film |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5227656A (en) * | 1975-08-27 | 1977-03-02 | Hitachi Ltd | Selecting instrumentation circuit for remote supervisory and control |
| JPS5633613A (en) * | 1979-08-28 | 1981-04-04 | Mitsubishi Electric Corp | Polarizing plate |
-
1984
- 1984-12-25 JP JP59281742A patent/JPH0679093B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61151502A (en) | 1986-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100767542B1 (en) | Liquid Crystal Display | |
| CN101113309B (en) | Pressure-sensitive adhesive for applying optically functional film, optically functional film and production process for the same | |
| JP3879899B2 (en) | Shading adhesive sheet | |
| KR102071340B1 (en) | Adhesive composition and adhesive film | |
| WO2013164868A1 (en) | Retardation film, process for producing polarizer, and liquid-crystal display device | |
| KR20010085543A (en) | Pressure-sensitive adhesive sheets and method of fixing functional film | |
| EP1102108B1 (en) | Method of protecting a liquid crystal display with a surface protection film | |
| KR101968955B1 (en) | Adhesive layer for optical film, adhesive film for optical film | |
| EP1764383A2 (en) | Process for producing a polarizing film | |
| KR19990078292A (en) | Attachment film for electronic display device | |
| KR20130098392A (en) | Liquid crystal display device | |
| JPH0679093B2 (en) | Polarizer | |
| KR100671404B1 (en) | Acrylic adhesive composition for large display devices and optical film using the same | |
| JPWO2011096036A1 (en) | Optical film | |
| JP2018092965A (en) | Wiring protecting resin composition and wiring board | |
| KR20060067405A (en) | Acrylic pressure-sensitive adhesive composition having excellent residual stress relaxation effect and optical film using the same | |
| JPH04254803A (en) | Adhesion type polarizing plate or adhesion type phase difference plate | |
| JPS61129604A (en) | Polarizing plate | |
| JP2895435B2 (en) | Manufacturing method of polarizing film with excellent durability | |
| JP2013120278A (en) | Method for manufacturing polarization plate protective film | |
| JPH0217081B2 (en) | ||
| KR20120125582A (en) | Optical film laminate, preparating method thereof and liquid crystal display device comprising the same | |
| KR100548826B1 (en) | Antistatic Hard Coating Liquid and Hard Coating Film | |
| KR20140113456A (en) | Cellulose acetate butyrate film, polarizing plate and liquid crystal display device | |
| KR20250051574A (en) | Optical laminate and display apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |