JPS62180303A - Polarizing film - Google Patents
Polarizing filmInfo
- Publication number
- JPS62180303A JPS62180303A JP2217086A JP2217086A JPS62180303A JP S62180303 A JPS62180303 A JP S62180303A JP 2217086 A JP2217086 A JP 2217086A JP 2217086 A JP2217086 A JP 2217086A JP S62180303 A JPS62180303 A JP S62180303A
- Authority
- JP
- Japan
- Prior art keywords
- film
- polyvinyl alcohol
- nickel
- polarizing
- ion
- 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
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 16
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 16
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052740 iodine Inorganic materials 0.000 claims abstract description 12
- 239000011630 iodine Substances 0.000 claims abstract description 12
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004327 boric acid Substances 0.000 claims abstract description 11
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 claims description 9
- 229910001453 nickel ion Inorganic materials 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 9
- 229920002554 vinyl polymer Polymers 0.000 abstract description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052796 boron Inorganic materials 0.000 abstract description 4
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 abstract description 2
- MQRWBMAEBQOWAF-UHFFFAOYSA-N acetic acid;nickel Chemical compound [Ni].CC(O)=O.CC(O)=O MQRWBMAEBQOWAF-UHFFFAOYSA-N 0.000 abstract description 2
- 229940078494 nickel acetate Drugs 0.000 abstract description 2
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 abstract description 2
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 abstract description 2
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 abstract description 2
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 abstract description 2
- 150000002500 ions Chemical class 0.000 abstract 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract 1
- 239000005977 Ethylene Substances 0.000 abstract 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 abstract 1
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 abstract 1
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 abstract 1
- 229920001577 copolymer Polymers 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000002834 transmittance Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 239000007864 aqueous solution Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229940078487 nickel acetate tetrahydrate Drugs 0.000 description 2
- 150000002816 nickel compounds Chemical class 0.000 description 2
- OINIXPNQKAZCRL-UHFFFAOYSA-L nickel(2+);diacetate;tetrahydrate Chemical compound O.O.O.O.[Ni+2].CC([O-])=O.CC([O-])=O OINIXPNQKAZCRL-UHFFFAOYSA-L 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- -1 vinylidene halide Chemical class 0.000 description 2
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920002978 Vinylon Polymers 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
- 229910001429 cobalt ion Inorganic materials 0.000 description 1
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 1
- 238000006704 dehydrohalogenation reaction Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 150000004291 polyenes Chemical class 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は耐久性と偏光能に優れた偏光フィルムに関する
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a polarizing film that has excellent durability and polarizing ability.
近年、液晶表示装置の使用範囲の拡大傾向に伴って偏光
フィルムの需要は大幅に増大している。In recent years, the demand for polarizing films has increased significantly as the range of use of liquid crystal display devices has expanded.
特に車載用の液晶表示装置が潜在需要の非常に大きいも
のであり、それに用いる偏光フィルムには今まで以上に
高耐久性と高偏光度が要求されている。In particular, in-vehicle liquid crystal display devices have a very large potential demand, and polarizing films used therefor are required to have higher durability and a higher degree of polarization than ever before.
従来公知の偏光フィルムとしては、次のものが知られて
いる。As conventionally known polarizing films, the following are known.
＋１１ ポリビニルアルコール系フィルムにヨー素を
吸着配向させたもの
（２） ポリビニルアルコール系フィルムに２色性染
料を吸着配向させたもの
（３） ポリビニルアルコール系フイルムヲ脱水処理
するか、ポリハロゲン化ビニル又はポリハロゲン化ビニ
リデン系フィルムを脱ハロゲン化水素処理してポリエン
を形成させ、実質的に１方向に配向させたもの
（４）疏水性フィルムに２色性染料を染着配向させたも
の
これらの内、（１）のものが他のものに比べて偏光能に
優れており、汎用されているが、耐熱性及び耐湿性の問
題がある。+11 A polyvinyl alcohol film with iodine adsorbed and oriented (2) A polyvinyl alcohol film with a dichroic dye adsorbed and oriented (3) The polyvinyl alcohol film should be dehydrated, or polyvinyl halogenated or polyvinyl alcohol film should be dehydrated. A vinylidene halide film is subjected to dehydrohalogenation treatment to form a polyene, which is oriented substantially in one direction. (4) A hydrophobic film in which a dichroic dye is dyed and oriented; Type (1) has better polarizing ability than other types and is widely used, but it has problems with heat resistance and moisture resistance.
これを解決する方法として、ヨー素を吸着配向せしめる
と共にコバルトイオンを含浸せしめる方法が提案されて
いる。（特開昭５６−４８６０１号）
〔発明が解決しようとしている問題点〕しかしながら、
この改良法に於いてもその効果は不十分であって、問題
は完全に解決されておらいない。As a method to solve this problem, a method has been proposed in which iodine is adsorbed and oriented and cobalt ions are impregnated. (Unexamined Japanese Patent Publication No. 56-48601) [Problem to be solved by the invention] However,
Even with this improved method, the effect is insufficient and the problem has not been completely solved.
本発明は、ポリビニルアルコール系フィルムにヨー素を
吸着配向させたフィルムの耐熱性を改良することにより
、優れた偏光能及び耐熱性を兼ね備えた偏光フィルムを
得ることを目的とする。An object of the present invention is to obtain a polarizing film that has both excellent polarizing ability and heat resistance by improving the heat resistance of a film in which iodine is adsorbed and oriented on a polyvinyl alcohol film.
本発明者らは、これら従来法の欠点に鑑み鋭意研究の結
果、ポリビニルアルコール系フィルムにヨー素を吸着配
向させると共に、ニッケルイオンとホウ酸とを含浸せし
めることにより極めて大きな効果を得ることに成功した
。In view of these drawbacks of conventional methods, the present inventors conducted intensive research and succeeded in obtaining extremely large effects by adsorbing and orienting iodine into a polyvinyl alcohol film and impregnating it with nickel ions and boric acid. did.
而して本発明は、ポリビニルアルコール系フィルムにヨ
ー素を吸着させ実質的に一方向に配向させると共に、ニ
ッケルイオンとホウ酸を含浸処理させてなる偏光フィル
ムである。Accordingly, the present invention is a polarizing film obtained by adsorbing iodine to a polyvinyl alcohol film, orienting it substantially in one direction, and impregnating it with nickel ions and boric acid.
本発明に於いて使用するポリビニルアルコール系フィル
ムとしては、ポリビニルアルコールフィルム及びポリビ
ニルホルマールフィルム、ポリビニルアセクールフィル
ム、ポリ （エチレン−酢酸ビニル）共重合体ケン化フ
ィルムの如きポリビニルアルコールｍＪ体フィルムを挙
げることが出来る。Examples of the polyvinyl alcohol film used in the present invention include polyvinyl alcohol films, polyvinyl formal films, polyvinyl acecool films, and poly(ethylene-vinyl acetate) copolymer saponified films. I can do it.
これらのポリビニルアルコール系フィルムにヨー素を吸
着配向させる方法としては、通常の方法が適用でき、ま
たニッケルイオンとホウ酸とを含浸せしめる方法として
は、ニッケル化合物とホウ酸とを溶解せしめた水溶液に
フィルムを接触させる方法が適用できる。A conventional method can be used to adsorb and orient iodine to these polyvinyl alcohol films, and a method for impregnating nickel ions and boric acid is to use an aqueous solution in which a nickel compound and boric acid are dissolved. A method of bringing films into contact can be applied.
作業上はニッケルイオンとホウ酸との含浸をヨー素の吸
着、延伸と同時に行う方法、即ち、ヨー素、ニッケルイ
オンとホウ酸とを含有する溶液中で延伸する方法が、工
程数が少なく好都合であるが、むろんヨー素の吸着、延
伸とニッケルイオンとホウ酸の含浸とを別に行っても良
い。In terms of work, a method in which impregnation with nickel ions and boric acid is carried out simultaneously with adsorption of iodine and stretching, that is, a method in which stretching is carried out in a solution containing iodine, nickel ions, and boric acid, is advantageous because it requires fewer steps. However, of course, iodine adsorption, stretching, and impregnation with nickel ions and boric acid may be performed separately.
ニッケルイオンを含浸させるために使用するニッケル化
合物としては、酢酸ニッケル、硫酸ニッケル、硝酸ニッ
ケル、塩化ニッケル等の無機ニッケル塩を例示すること
ができる。Examples of the nickel compound used to impregnate nickel ions include inorganic nickel salts such as nickel acetate, nickel sulfate, nickel nitrate, and nickel chloride.
偏光フィルム中に於ける含浸量は、ニッケルイオンはフ
ィルム１ｇ当たり０．２ｍｇ〜２０ｍｇ、特に１〜５１
Ｉ１ｇが、ホウ素はフィルム１ｇ当たり０．３ ｍｇ〜
３０ｍｇ、特に１〜１０ｍｇが適当である。The amount of nickel ions impregnated into the polarizing film is 0.2 mg to 20 mg, especially 1 to 51 mg per gram of film.
I1g, boron is 0.3 mg per 1g of film
30 mg, especially 1 to 10 mg is suitable.
本発明において、フィルムの延伸は、１軸方向のみの場
合の他、強度を高めるために、更に他軸（直角）方向に
若干延伸する場合も含まれる。この場合、他軸方向への
延伸は、同時でもｌ軸方向に延伸した後でも良く、また
その延伸倍率は１軸方向への延伸倍率の１／２以下であ
ることが好ましい。In the present invention, the film may be stretched not only in one direction but also slightly in another (perpendicular) direction in order to increase the strength. In this case, the stretching in the other axis direction may be performed simultaneously or after the stretching in the l-axis direction, and the stretching ratio is preferably 1/2 or less of the stretching ratio in the uniaxial direction.
本発明によって得られる偏光フィルムは光学特性に優れ
ると共に、耐熱性、耐湿性が高いので、液晶表示装置等
の各種光学機器、サングラス、自動車のフロントガラス
、窓等の種々の分野で使用することができる。The polarizing film obtained by the present invention has excellent optical properties as well as high heat resistance and moisture resistance, so it can be used in various fields such as various optical devices such as liquid crystal display devices, sunglasses, automobile windshields, and windows. can.
以下実施例及び比較例により本発明を更に詳細に説明す
る。The present invention will be explained in more detail below with reference to Examples and Comparative Examples.
尚、実施例および比較例において、透過率は分光光度計
（日立製作所製、商品名ＨＩ ＴＡＣＨｌ３３０）を用
いて測定した。単板透過率、平行位透過率（Ｈｏ：フィ
ルムを２枚、その分子配向が互いに平行になるように重
ね合わせた時の光透過率）、直交位透過率（Ｈｑ。：フ
ィルムを２枚、その分子配向が互いに垂直になるように
重ね合わせた時の光透過率）はいずれも可視部領域４０
０〜７００ｎｍにおける平均値である。In the Examples and Comparative Examples, the transmittance was measured using a spectrophotometer (manufactured by Hitachi, Ltd., trade name: HI TACHl330). Single plate transmittance, parallel transmittance (Ho: light transmittance when two films are stacked so that their molecular orientations are parallel to each other), orthogonal transmittance (Hq.: two films, The light transmittance (light transmittance when superimposed so that the molecular orientations are perpendicular to each other) is 40% in the visible region.
It is an average value in 0-700 nm.
偏光度は次式により求めた。The degree of polarization was determined using the following formula.
色相は色差計（東京重色社製、商品名ＴＣ−１５００Ｍ
Ｃ）を用いて測定した。色相測定における平行位、直交
位の意味は透過率の場合と同じである。Hue was measured using a color difference meter (manufactured by Tokyo Juishokusha, product name TC-1500M)
C). The meanings of parallel and orthogonal positions in hue measurement are the same as in transmittance.
実施例１
ヨー素０．０３％、ヨー化カリウム０．４３％、酢酸ニ
ッケル４水塩０．３２％及びホウ酸０．７１％を含む水
溶液中で、ポリピリルアルコールフィルム（クラレ株式
会社製、商品名クラレビニロン７５００）を９４秒をか
けて１軸方向に４倍延伸し、その後５６秒間そのままの
状態で液中に放置した。Example 1 A polypyryl alcohol film (manufactured by Kuraray Co., Ltd. , trade name: Kuraray Vinylon 7500) was stretched 4 times in the uniaxial direction for 94 seconds, and then left in the solution for 56 seconds.
次いで、液中からフィルムを取り出して水洗し乾燥した
後、緊張状態で１１０℃で２０分間の加熱処理を行った
。Next, the film was taken out of the solution, washed with water, dried, and then heated under tension at 110° C. for 20 minutes.
このフィルムには１ｇあたりホウ素が１．７■、ニッケ
ルが１．７■含まれていた。This film contained 1.7 μg of boron and 1.7 μg of nickel per gram.
このフィルム及びこのフィルムを１００℃の雰囲気下に
２００時間曝した後のフィルムの各々の透過率及び色相
は、第１表の如くであった。The transmittance and hue of this film and the film after it was exposed to an atmosphere at 100° C. for 200 hours were as shown in Table 1.
実施例２
水溶液をヨー素０．０６％、ヨー化カリウム０．５０％
、酢酸ニッケル４水塩０．３２％及びホウ酸０゜６９％
を含む水溶液に変えた以外は実施例１と同様にして実施
し、得られたフィルムの両面に、ウレタン系接着剤を用
いて、厚さ７０μｍのポリカーボネートフィルムを貼り
合わせた。Example 2 An aqueous solution containing 0.06% iodine and 0.50% potassium iodide
, nickel acetate tetrahydrate 0.32% and boric acid 0°69%
The procedure was carried out in the same manner as in Example 1, except that the aqueous solution was changed to an aqueous solution containing .
このフィルムには１ｇあたりホウ素が１．７■、ニッケ
ルが１．７■含まれていた。This film contained 1.7 μg of boron and 1.7 μg of nickel per gram.
このフィルム及びこのフィルムを温度８０℃、相対湿度
８０℃の雰囲気下に２００時間曝した後の後のフィルム
の各々の透過率及び色相は、第１表の如くであった。Table 1 shows the transmittance and hue of this film and the films after the film was exposed to an atmosphere of 80° C. and relative humidity of 80° C. for 200 hours.
比較例１
市販品の中性色偏光フィルム（ポリビニルアルコール系
フィルムにヨー素を吸着配向させ、保護膜としてトリア
セチルセルロースを貼り合わせたもの）を１００℃の雰
囲気に曝したたところ、６０時間以内に甚だしく変色し
た。Comparative Example 1 A commercially available neutral color polarizing film (polyvinyl alcohol film with iodine adsorbed and oriented and triacetylcellulose laminated as a protective film) was exposed to an atmosphere at 100°C for less than 60 hours. It was severely discolored.
このフィルム及びこのフィルムを温度１００℃の雰囲気
下に６０時間曝した後のフィルムの各々の透過率及び色
相は、第１表の如くであった。The transmittance and hue of this film and the film after it was exposed to an atmosphere at a temperature of 100° C. for 60 hours were as shown in Table 1.
比較例２
比較例ｉと同じ偏光フィルムを温度８０℃、相対湿度８
０％の雰囲気下に曝すと、４０時間以内に透明になって
しまい、偏光能を示さなくなった。Comparative Example 2 The same polarizing film as Comparative Example i was heated at a temperature of 80°C and a relative humidity of 8.
When exposed to a 0% atmosphere, it became transparent within 40 hours and no longer exhibited polarizing ability.
比較例３
水溶液が酢酸ニッケル４水塩を全く含まない以外は実施
例１と同様に実施した。Comparative Example 3 The same procedure as in Example 1 was carried out except that the aqueous solution did not contain any nickel acetate tetrahydrate.
得られたフィルムは平行位透過率３１．２％、直交位透
過率０．１％で、極めて高い偏光能を示したが、１００
℃の雰囲気下に曝すと、４０時間以内に濃褐色に変化し
た。The obtained film had a parallel transmittance of 31.2% and a perpendicular transmittance of 0.1%, showing extremely high polarizing ability.
When exposed to an atmosphere at 0.degree. C., it turned dark brown within 40 hours.
比較例４
水溶液がホウ酸を全く含まない以外は実施例１と同様に
実施した。Comparative Example 4 The same procedure as Example 1 was carried out except that the aqueous solution did not contain any boric acid.
得られたフィルムの耐熱性は、比較例３で得られたフィ
ルムと同程度に低かった。The heat resistance of the obtained film was as low as that of the film obtained in Comparative Example 3.
手３６を主甫正書（自発） 昭和６１年３月４日Hand 36 is Shu Fu Seisho (spontaneous) March 4, 1986
Claims (1)
実質的に一方向に配向させると共に、ニッケルイオンと
ホウ酸を含浸処理させてなる偏光フィルムA polarizing film made by adsorbing iodine to a polyvinyl alcohol film, orienting it substantially in one direction, and impregnating it with nickel ions and boric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2217086A JPS62180303A (en) | 1986-02-05 | 1986-02-05 | Polarizing film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2217086A JPS62180303A (en) | 1986-02-05 | 1986-02-05 | Polarizing film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62180303A true JPS62180303A (en) | 1987-08-07 |
Family
ID=12075329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2217086A Pending JPS62180303A (en) | 1986-02-05 | 1986-02-05 | Polarizing film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62180303A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0391741A2 (en) * | 1989-04-06 | 1990-10-10 | Merocel Corporation | Polymeric broad-spectrum antimicrobial materials |
-
1986
- 1986-02-05 JP JP2217086A patent/JPS62180303A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0391741A2 (en) * | 1989-04-06 | 1990-10-10 | Merocel Corporation | Polymeric broad-spectrum antimicrobial materials |
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