WO2011001832A1 - 液晶性コーティング液および偏光膜 - Google Patents
液晶性コーティング液および偏光膜 Download PDFInfo
- Publication number
- WO2011001832A1 WO2011001832A1 PCT/JP2010/060290 JP2010060290W WO2011001832A1 WO 2011001832 A1 WO2011001832 A1 WO 2011001832A1 JP 2010060290 W JP2010060290 W JP 2010060290W WO 2011001832 A1 WO2011001832 A1 WO 2011001832A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- crystalline coating
- liquid crystalline
- liquid
- azo compound
- polarizing film
- Prior art date
Links
- 0 COc(cc1)ccc1N=NC(c(c1c2)ccc2S(O)(=O)=O)=CC[C@@]1N=Nc1c(**)cc(cc(c(N)c2)S(O)(=O)=O)c2c1O Chemical compound COc(cc1)ccc1N=NC(c(c1c2)ccc2S(O)(=O)=O)=CC[C@@]1N=Nc1c(**)cc(cc(c(N)c2)S(O)(=O)=O)c2c1O 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K19/60—Pleochroic dyes
- C09K19/601—Azoic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K19/60—Pleochroic dyes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
- C09B31/02—Disazo dyes
- C09B31/04—Disazo dyes from a coupling component "C" containing a directive amino group
- C09B31/053—Amino naphthalenes
- C09B31/057—Amino naphthalenes containing acid groups, e.g. —CO2H, —SO3H, —PO3H2, —OSO3H, —OPO2H2; Salts thereof
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
- C09B31/02—Disazo dyes
- C09B31/08—Disazo dyes from a coupling component "C" containing directive hydroxyl and amino groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
- C09B67/0083—Solutions of dyes
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3016—Polarising elements involving passive liquid crystal elements
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
- C09K2323/03—Viewing layer characterised by chemical composition
- C09K2323/031—Polarizer or dye
Definitions
- the present invention relates to a liquid crystalline coating liquid and a polarizing film produced using the liquid crystalline coating liquid.
- a polarizing plate of a liquid crystal panel As a polarizing plate of a liquid crystal panel, a polarizing plate obtained by dyeing a resin film such as polyvinyl alcohol with iodine or a dichroic dye and stretching it in one direction is widely used.
- the above polarizing plate does not have sufficient heat resistance and light resistance depending on the type of pigment or resin film. As the liquid crystal panel becomes larger, the film production apparatus must be enlarged.
- a method of forming a polarizing film by casting a liquid crystalline coating liquid containing a lyotropic liquid crystal compound on a substrate such as a glass plate or a resin film and orienting the lyotropic liquid crystal compound is known. .
- the lyotropic liquid crystal compound forms a supramolecular aggregate exhibiting liquid crystallinity in a solution.
- the major axis direction of the supramolecular aggregate is aligned in the casting direction.
- Patent Document 1 There is an azo compound as such a lyotropic liquid crystal compound (Patent Document 1).
- the polarizing film of the lyotropic liquid crystal compound does not need to be stretched. Further, the film thickness can be remarkably reduced. For this reason, a polarizing film of a lyotropic liquid crystal compound is expected to have a future.
- a polarizing film obtained by casting a liquid crystal coating solution containing a conventional azo compound causes fine crystals to precipitate in the film during the drying process, resulting in an increase in the haze (light scattering) of the polarizing film, and transparency. Getting worse. Therefore, a liquid crystalline coating solution containing a novel azo compound that can solve the problem of haze is desired.
- a polarizing film obtained by casting a liquid crystalline coating solution containing a conventional azo compound causes fine crystals to precipitate in the film during the drying process, resulting in an increase in the haze (light scattering) of the polarizing film and a deterioration in transparency.
- the present invention provides a liquid crystalline coating solution containing a novel azo compound that solves this haze problem.
- the gist of the present invention is as follows.
- the liquid crystalline coating liquid of the present invention contains an azo compound represented by the following general formula (1) and a solvent for dissolving the azo compound.
- Q 1 represents an aryl group which may have a substituent.
- Q 2 represents an arylene group which may have a substituent.
- R represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, an acetyl group, a benzoyl group, or an optionally substituted phenyl group.
- M represents a counter ion.
- the solvent of the liquid crystalline coating solution of the present invention is a hydrophilic solvent.
- the liquid crystalline coating solution of the present invention has an azo compound concentration of 0.5 wt% to 50 wt%.
- the liquid crystalline coating solution of the present invention has a pH of 5 to 9 of the liquid crystalline coating solution.
- the polarizing film of the present invention is obtained by casting the above liquid crystalline coating liquid into a thin film and drying it.
- the present inventors diligently studied the precipitation of fine crystals of a liquid crystalline coating solution containing an azo compound. As a result, it has been found that a polarizing film having a small haze can be obtained by using an azo compound having an aminonaphthol skeleton in which a substituent such as a sulfonic acid group is substituted at a specific position.
- the aminonaphthol skeleton Since the aminonaphthol skeleton has high planarity, it is likely to be a site with poor solubility.
- a sulfonic acid group was introduced at a specific position to facilitate dissolution of the aminonaphthol skeleton. This is considered to suppress the precipitation of fine crystals.
- liquid crystalline coating liquid of the present invention containing the above azo compound When the liquid crystalline coating liquid of the present invention containing the above azo compound is cast and dried, precipitation of fine crystals is suppressed. As a result, the size of the fine crystals that cause haze is much smaller than in the past. This is believed to reduce haze.
- the polarizing film obtained by casting and drying the liquid crystalline coating liquid containing the azo compound of the present invention can suppress the precipitation of fine crystals in the film during the drying process.
- a polarizing film having a small haze can be obtained.
- the liquid crystalline coating liquid of the present invention contains an azo compound represented by the following general formula (1) and a solvent for dissolving the azo compound.
- Q 1 represents an aryl group which may have a substituent.
- Q 2 represents an arylene group which may have a substituent.
- R represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, an acetyl group, a benzoyl group, or an optionally substituted phenyl group.
- M represents a counter ion.
- the above azo compound forms a supramolecular aggregate in the liquid and exhibits a liquid crystal phase.
- a liquid crystal phase A nematic liquid crystal phase, a hexagonal liquid crystal phase, etc. are mentioned. These liquid crystal phases can be identified and confirmed by observing an optical pattern with a polarizing microscope.
- the concentration of the azo compound in the liquid crystalline coating liquid of the present invention is preferably 0.5% by weight to 50% by weight.
- a liquid crystalline coating liquid exhibiting a stable liquid crystal phase in at least a part of the concentration range is obtained, and a polarizing film having a desired thickness can be easily obtained.
- the pH of the liquid crystalline coating solution of the present invention is preferably 5 to 9.
- a polarizing film having a high degree of orientation can be obtained.
- the coater made of metal such as stainless steel is not corroded, the productivity is excellent.
- liquid crystalline coating liquid of the present invention contains the above-mentioned azo compound and a solvent, it may contain any other liquid, for example, other liquid crystal compounds and additives.
- the additive include a surfactant, an antioxidant, and an antistatic agent. The concentration of these additives is usually less than 10% by weight.
- the method for preparing the liquid crystalline coating solution of the present invention is not particularly limited.
- an azo compound may be added to the solvent, or conversely, a solvent may be added to the azo compound.
- the azo compound used in the liquid crystalline coating solution of the present invention is a compound represented by the above general formula (1).
- This azo compound has the property of causing a phase transition between isotropic phase and liquid crystal phase (lyotropic liquid crystallinity) when the concentration is changed in a solution state dissolved in a solvent.
- the azo compound represented by the general formula (1) exhibits absorption dichroism in the visible light region (wavelength 380 nm to 780 nm). Since the azo compound represented by the general formula (1) has a substituent such as a sulfonic acid group at a specific position, precipitation of fine crystals is suppressed and a polarizing film having a small haze can be obtained.
- Q 1 represents an aryl group which may have a substituent.
- Q 2 represents an arylene group which may have a substituent.
- the substituent for Q 1 and Q 2 a substituent suitable for adjusting the absorption wavelength range is used.
- R represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, an acetyl group, a benzoyl group, or a phenyl group which may have a substituent.
- M represents a counter ion, preferably a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, another metal ion, or a substituted or unsubstituted ammonium ion.
- the metal ion include Li + , Ni 2+ , Fe 3+ , Cu 2+ , Ag + , Zn 2+ , Al 3+ , Pd 2+ , Cd 2+ , Sn 2+ , Co 2+ , Mn 2+ , and Ce 3+ .
- the counter ion M is a multivalent ion, a plurality of azo compounds share one multivalent ion (counter ion).
- the azo compound represented by the general formula (1) is obtained by, for example, subjecting an aniline derivative and a naphthalene derivative to diazotization and coupling reaction by a conventional method to obtain a monoazo compound, which is further diazotized to give 1-amino-8.
- -It can be obtained by a coupling reaction with a naphthol derivative.
- the solvent used in the present invention dissolves the above azo compound, and preferably a hydrophilic solvent is used.
- the hydrophilic solvent is preferably water, alcohols, cellosolves, and mixed solvents thereof.
- a water-soluble compound such as glycerin or ethylene glycol may be added to the solvent.
- the polarizing film of the present invention can be obtained by casting the liquid crystalline coating liquid of the present invention on the surface of a substrate or a metal drum and drying it.
- the casting means is not particularly limited as long as the liquid crystalline coating liquid can be cast uniformly, and suitable coaters such as a slide coater, slot die coater, bar coater, rod coater, roll coater, curtain coater, spray coater, etc. Is used.
- the drying method is not particularly limited, and natural drying, reduced pressure drying, heat drying, reduced pressure heat drying and the like are used.
- the heating and drying means any drying apparatus such as an air circulation drying oven or a hot roll is used.
- the drying temperature in the case of heat drying is preferably 50 ° C. to 120 ° C.
- the polarizing film of the present invention is preferably dried so that the residual solvent amount is 5% by weight or less based on the total weight of the film.
- the polarizing film of the present invention preferably exhibits absorption dichroism in the visible light region (wavelength 380 nm to 780 nm). This characteristic is obtained by orienting the azo compound in the polarizing film.
- the azo compound forms a supramolecular aggregate in the liquid crystalline coating solution.
- the major axis direction of the supramolecular aggregate is aligned in the casting direction.
- orientation means, not only shear stress but also orientation treatment such as rubbing treatment or photo-alignment, orientation by magnetic field or electric field, and the like may be combined.
- the thickness of the polarizing film of the present invention is preferably 0.1 ⁇ m to 3 ⁇ m.
- the polarization degree of the polarizing film of the present invention is preferably 95% or more, more preferably 97% or more.
- the haze value of the polarizing film can be preferably 10% or less, more preferably 5% or less, and even more preferably 2% or less.
- the base material include glass plates and resin films.
- the alignment film is preferably subjected to an alignment treatment.
- the substrate including the alignment film examples include a substrate obtained by coating a polyimide film on a glass plate.
- This polyimide film is provided with orientation by a known method, for example, mechanical orientation treatment such as rubbing or photo-alignment treatment.
- the glass of the substrate alkali-free glass used for a liquid crystal cell is preferable.
- Resin film base material is suitable for applications that require flexibility.
- the surface of the resin film may be aligned by rubbing or the like, or an alignment film made of another material may be formed on the surface of the resin film.
- the material of the resin film used for the substrate is not particularly limited as long as it is a film-forming resin.
- styrene resin (meth) acrylic resin, polyester resin, polyolefin resin, norbornene resin , Polyimide resin, cellulose resin, polyvinyl alcohol resin, and polycarbonate resin.
- the thickness of the substrate is not particularly limited except for the application, but is generally in the range of 1 ⁇ m to 1000 ⁇ m.
- the polarizing film of the present invention is suitably used as a polarizing element.
- the polarizing element is used for liquid crystal panels of various devices, for example, liquid crystal panels of liquid crystal televisions, computer displays, mobile phones, digital cameras, video cameras, game machines, car navigation systems, OA equipment, FA equipment, medical equipment, security equipment, etc. .
- the polarizing film of the present invention may be used after being peeled off from the substrate, or may be used while being laminated with the substrate.
- the substrate When used for optical purposes while being laminated with a substrate, the substrate is preferably transparent to visible light. When it peels from a base material, Preferably, it laminates
- Example 1 4-Nitroaniline and 8-amino-2-naphthalenesulfonic acid were subjected to diazotization and coupling reaction according to a conventional method to obtain a monoazo compound.
- Regular Method is based on pages 135-152 published by Yutaka Hosoda, “Theoretical Manufacturing, Dye Chemistry, 5th Edition,” July 15, 1968.
- the obtained monoazo compound is diazotized by a conventional method, and is further subjected to a coupling reaction with 1-amino-8-naphthol-4,6-disulfonic acid lithium salt to obtain a crude compound containing the azo compound of the structural formula (2).
- the product was obtained. This was salted out with lithium chloride to obtain an azo compound of the structural formula (2).
- the azo compound of the structural formula (2) was dissolved in ion-exchanged water to prepare a 20% by weight liquid crystalline coating solution.
- the liquid crystalline coating solution had a pH of 7.4.
- the liquid crystalline coating solution was collected with a polyethylene dropper, sandwiched between two glass slides, and observed with a polarizing microscope at room temperature (23 ° C.). As a result, a nematic liquid crystal phase was observed.
- the liquid crystalline coating solution was diluted with ion exchange water to prepare 5% by weight.
- This liquid crystalline coating liquid was applied onto a norbornene polymer film (ZEONOR manufactured by Nippon Zeon Co., Ltd.) subjected to rubbing treatment and corona treatment using a bar coater (Mayerrot HS9 manufactured by BUSCHMAN). Thereafter, it was naturally dried in a thermostatic chamber at 23 ° C. to produce a polarizing film having a thickness of 0.6 ⁇ m.
- Table 1 shows the optical characteristics of the obtained polarizing film.
- Example 2 An azo compound of the structural formula (3) was obtained in the same manner as in Example 1, except that 5-amino-2-naphthalenesulfonic acid was used instead of 8-amino-2-naphthalenesulfonic acid.
- the azo compound of the structural formula (3) was dissolved in ion-exchanged water to prepare a 20% by weight liquid crystalline coating solution.
- the liquid crystalline coating solution had a pH of 7.2.
- the liquid crystalline coating solution was collected with a polyethylene dropper, sandwiched between two glass slides, and observed with a polarizing microscope at room temperature (23 ° C.). As a result, a nematic liquid crystal phase was observed.
- the liquid crystalline coating solution was diluted with ion exchange water to prepare 5% by weight. Using this liquid crystalline coating solution, a polarizing film having a thickness of 0.6 ⁇ m was produced in the same manner as in Example 1. Table 1 shows the optical characteristics of the obtained polarizing film.
- the azo compound of the structural formula (4) was dissolved in ion-exchanged water to prepare a 20% by weight liquid crystalline coating solution.
- the liquid crystalline coating solution had a pH of 6.7.
- the liquid crystalline coating solution was collected with a polyethylene dropper, sandwiched between two glass slides, and observed with a polarizing microscope at room temperature (23 ° C.). As a result, a nematic liquid crystal phase was observed.
- a polarizing film having a thickness of 0.6 ⁇ m was prepared in the same manner as in Example 1.
- Table 1 shows the optical characteristics of the obtained polarizing film.
- the azo compound of the structural formula (5) was dissolved in ion-exchanged water to prepare a 20% by weight liquid crystalline coating solution.
- the liquid crystalline coating solution had a pH of 6.0.
- the liquid crystalline coating solution was collected with a polyethylene dropper, sandwiched between two glass slides, and observed with a polarizing microscope at room temperature (23 ° C.). As a result, a nematic liquid crystal phase was observed.
- the liquid crystalline coating solution was diluted with ion exchange water to prepare 10% by weight. Using this liquid crystalline coating solution, a polarizing film having a thickness of 0.6 ⁇ m was produced in the same manner as in Example 1. Table 1 shows the optical characteristics of the obtained polarizing film.
- the azo compound of the structural formula (6) was dissolved in ion-exchanged water to prepare a 20% by weight liquid crystalline coating solution.
- the liquid crystalline coating solution had a pH of 6.0.
- the liquid crystalline coating solution was collected with a polyethylene dropper, sandwiched between two glass slides, and observed with a polarizing microscope at room temperature (23 ° C.). As a result, a nematic liquid crystal phase was observed.
- the liquid crystalline coating solution was diluted with ion exchange water to prepare 10% by weight. Using this liquid crystalline coating solution, a polarizing film having a thickness of 0.6 ⁇ m was produced in the same manner as in Example 1. Table 1 shows the optical characteristics of the obtained polarizing film.
- Liquid crystal phase Collect a small amount of liquid crystalline coating solution with a polyethylene dropper, sandwich between two glass slides, and use a polarizing microscope (OPTIPHOT-POL made by Olympus Co., Ltd.) equipped with a large sample heating / cooling stage for microscope (Japan Hitech 10013L) Used to observe the liquid crystal phase.
- OPTIPHOT-POL made by Olympus Co., Ltd.
- Japan Hitech 10013L Used to observe the liquid crystal phase.
- the polarizing film of the present invention is suitably used as a polarizing element.
- Polarizing elements are used for liquid crystal panels of various devices, such as liquid crystal televisions, computer displays, mobile phones, digital cameras, video cameras, game machines, car navigation systems, OA equipment, FA equipment, medical equipment, security equipment, etc. It is done.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
- Paints Or Removers (AREA)
Abstract
Description
(1)本発明の液晶性コーティング液は下記一般式(1)で表わされるアゾ化合物と、このアゾ化合物を溶解する溶媒とを含む。
一般式(1)中、Q1は置換基を有していてもよいアリール基を表わす。Q2は置換基を有していてもよいアリーレン基を表わす。Rは水素原子、炭素数1~3のアルキル基、アセチル基、ベンゾイル基または、置換基を有していてもよいフェニル基を表わす。Mは対イオンを表わす。
(2)本発明の液晶性コーティング液は溶媒が親水性溶媒である。
(3)本発明の液晶性コーティング液はアゾ化合物の濃度が0.5重量%~50重量%である。
(4)本発明の液晶性コーティング液は液晶性コーティング液のpHが5~9である。
(5)本発明の偏光膜は上記の液晶性コーティング液を薄膜状に流延し、乾燥して得られる。
本発明の液晶性コーティング液は、下記一般式(1)で表わされるアゾ化合物と、このアゾ化合物を溶解する溶媒とを含む。
本発明の液晶性コーティング液に用いられるアゾ化合物は、上記一般式(1)で表わされる化合物である。このアゾ化合物は溶媒に溶解させた溶液状態で濃度を変化させると、等方相-液晶相の相転移を起こす性質(リオトロピック液晶性)を有する。
本発明に用いられる溶媒は上記のアゾ化合物を溶解するものであり、好ましくは、親水性溶媒が用いられる。親水性溶媒は、好ましくは、水、アルコール類、セロソルブ類、およびそれらの混合溶媒である。溶媒にはグリセリン、エチレングリコールなどの、水溶性の化合物が添加されていてもよい。これらの添加物はアゾ化合物の易溶性や、液晶性コーティング液の乾燥速度を調整するために用いることができる。
本発明の偏光膜は、本発明の液晶性コーティング液を基材や金属ドラム表面に流延し、乾燥して得られる。
本発明の液晶性コーティング液を流延するための基材に特に制限はなく、単層のものでもよいし、複層のもの(例えば、配向膜を含む積層体)でもよい。
本発明の偏光膜は偏光素子として好適に用いられる。偏光素子は各種機器の液晶パネル、例えば、液晶テレビ、コンピューターディスプレイ、携帯電話、デジタルカメラ、ビデオカメラ、ゲーム機、カーナビゲーション、OA機器、FA機器、医療機器、警備機器などの液晶パネルに用いられる。
4-ニトロアニリンと8-アミノ-2-ナフタレンスルホン酸とを、常法に従って、ジアゾ化およびカップリング反応させ、モノアゾ化合物を得た。「常法」は、細田豊著「理論製造 染料化学 第5版」昭和43年7月15日 技法堂発行、135ページ~152ページによる。
8-アミノ-2-ナフタレンスルホン酸に代えて、5-アミノ-2-ナフタレンスルホン酸を用いた以外は、実施例1と同様の方法で構造式(3)のアゾ化合物を得た。
1-アミノ-8-ナフトール-2,4-ジスルホン酸リチウム塩に代えて、7-アミノ-1-ナフトール-3,6-ジスルホン酸リチウム塩を用いた以外は、実施例1と同様の方法で構造式(4)のアゾ化合物を得た。
4-ニトロアニリンに代えて、p-アニシジンを用いた以外は、比較例1と同様の方法で構造式(5)のアゾ化合物を得た。
4-ニトロアニリンに代えて、p-トルイジンを用いた以外は、比較例1と同様の方法で構造式(6)のアゾ化合物を得た。
[厚み]
偏光膜の一部を剥離し、三次元非接触表面形状計測システム(菱化システム社製Micromap MM5200)を用いて段差を測定し、偏光膜の厚みを求めた。
液晶性コーティング液を、少量、ポリエチレンスポイトで採取し、二枚のスライドガラスに挟み、顕微鏡用大型試料加熱冷却ステージ(ジャパンハイテック社製10013L)を備えた偏光顕微鏡(オリンパス社製OPTIPHOT-POL)を用いて、液晶相を観察した。
液晶性コーティング液のpHは、pHメーター(DENVER INSTRUMENT社製Ultra BASIC)を用いて測定した。
グラントムソン偏光子を備えた分光光度計(日本分光社製V-7100)を用いて、波長380nm~780nmの範囲の偏光透過スペクトルを測定した。このスペクトルから、視感度補正を行なった透過率Y1、Y2を求め、
偏光度=(Y1-Y2)/(Y1+Y2)
により、偏光度を求めた。透過率Y1は、最大透過率方向の直線偏光の透過率であり、透過率Y2は、最大透過率方向に直交する方向の透過率である。
ヘイズは、ヘイズ測定装置(村上色彩研究所製HR-100)を用いて、室温(23℃)にて測定した。3回繰り返して測定し、その平均値を測定値とした。
Claims (9)
- 前記溶媒が親水性溶媒であることを特徴とする、請求項1に記載の液晶性コーティング液。
- 前記アゾ化合物の濃度が0.5重量%~50重量%であることを特徴とする、請求項1または2に記載の液晶性コーティング液。
- 前記液晶性コーティング液のpHが5~9であることを特徴とする、請求項1または2に記載の液晶性コーティング液。
- 前記液晶性コーティング液のpHが5~9であることを特徴とする、請求項3に記載の液晶性コーティング液。
- 請求項1または2に記載の液晶性コーティング液を薄膜状に流延し、乾燥して得られることを特徴とする偏光膜。
- 請求項3に記載の液晶性コーティング液を薄膜状に流延し、乾燥して得られることを特徴とする偏光膜。
- 請求項4に記載の液晶性コーティング液を薄膜状に流延し、乾燥して得られることを特徴とする偏光膜。
- 請求項5に記載の液晶性コーティング液を薄膜状に流延し、乾燥して得られることを特徴とする偏光膜。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010800035960A CN102245736B (zh) | 2009-07-01 | 2010-06-17 | 液晶性涂布液及偏光膜 |
US13/321,439 US8734677B2 (en) | 2009-07-01 | 2010-06-17 | Liquid-crystal coating fluid and polarizing film |
KR1020117005420A KR101191689B1 (ko) | 2009-07-01 | 2010-06-17 | 액정성 코팅액 및 편광막 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009-156802 | 2009-07-01 | ||
JP2009156802A JP5276532B2 (ja) | 2009-07-01 | 2009-07-01 | 液晶性コーティング液および偏光膜 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011001832A1 true WO2011001832A1 (ja) | 2011-01-06 |
Family
ID=43410910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/060290 WO2011001832A1 (ja) | 2009-07-01 | 2010-06-17 | 液晶性コーティング液および偏光膜 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8734677B2 (ja) |
JP (1) | JP5276532B2 (ja) |
KR (1) | KR101191689B1 (ja) |
CN (1) | CN102245736B (ja) |
TW (1) | TWI409321B (ja) |
WO (1) | WO2011001832A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103439826A (zh) * | 2013-07-22 | 2013-12-11 | 京东方科技集团股份有限公司 | 液晶面板及其制造方法和液晶显示装置 |
KR102174761B1 (ko) | 2013-08-14 | 2020-11-06 | 삼성디스플레이 주식회사 | 플렉서블 표시장치 및 그 제조방법 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007126628A (ja) * | 2005-04-04 | 2007-05-24 | Mitsubishi Chemicals Corp | 異方性色素膜用色素、該色素を含む組成物、異方性色素膜及び偏光素子 |
WO2009041203A1 (ja) * | 2007-09-26 | 2009-04-02 | Nitto Denko Corporation | コーティング液および光学異方膜の製造方法 |
JP2009139806A (ja) * | 2007-12-10 | 2009-06-25 | Nitto Denko Corp | 液晶性コーティング液の製造方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3680323B2 (ja) * | 1993-10-14 | 2005-08-10 | 住友化学株式会社 | 染料系偏光膜 |
TWI384033B (zh) | 2005-04-21 | 2013-02-01 | Mitsubishi Chem Corp | 異向性色素膜用組成物,異向性色素膜及偏光元件 |
JP4946149B2 (ja) | 2005-04-21 | 2012-06-06 | 三菱化学株式会社 | 異方性色素膜用組成物、異方性色素膜及び偏光素子 |
KR101301468B1 (ko) | 2005-07-19 | 2013-08-29 | 미쓰비시 가가꾸 가부시키가이샤 | 이방성 색소막용 조성물, 이방성 색소막 및 편광 소자 |
JP5092345B2 (ja) | 2006-10-20 | 2012-12-05 | 三菱化学株式会社 | 異方性色素膜、および偏光素子 |
JP5153445B2 (ja) * | 2008-01-24 | 2013-02-27 | 日東電工株式会社 | 液晶性コーティング液および偏光膜 |
JP5210287B2 (ja) * | 2009-11-09 | 2013-06-12 | 日東電工株式会社 | 液晶性コーティング液および偏光膜 |
-
2009
- 2009-07-01 JP JP2009156802A patent/JP5276532B2/ja not_active Expired - Fee Related
-
2010
- 2010-06-17 CN CN2010800035960A patent/CN102245736B/zh not_active Expired - Fee Related
- 2010-06-17 US US13/321,439 patent/US8734677B2/en not_active Expired - Fee Related
- 2010-06-17 WO PCT/JP2010/060290 patent/WO2011001832A1/ja active Application Filing
- 2010-06-17 KR KR1020117005420A patent/KR101191689B1/ko active IP Right Grant
- 2010-06-23 TW TW099120410A patent/TWI409321B/zh not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007126628A (ja) * | 2005-04-04 | 2007-05-24 | Mitsubishi Chemicals Corp | 異方性色素膜用色素、該色素を含む組成物、異方性色素膜及び偏光素子 |
WO2009041203A1 (ja) * | 2007-09-26 | 2009-04-02 | Nitto Denko Corporation | コーティング液および光学異方膜の製造方法 |
JP2009139806A (ja) * | 2007-12-10 | 2009-06-25 | Nitto Denko Corp | 液晶性コーティング液の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
CN102245736A (zh) | 2011-11-16 |
TWI409321B (zh) | 2013-09-21 |
KR20110039492A (ko) | 2011-04-18 |
CN102245736B (zh) | 2013-02-27 |
US20120062829A1 (en) | 2012-03-15 |
JP5276532B2 (ja) | 2013-08-28 |
TW201114882A (en) | 2011-05-01 |
KR101191689B1 (ko) | 2012-10-16 |
JP2011012152A (ja) | 2011-01-20 |
US8734677B2 (en) | 2014-05-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4915699B2 (ja) | 液晶性コーティング液および偏光膜 | |
TWI393756B (zh) | Liquid crystal coating liquid and polarizing film | |
JP5336751B2 (ja) | 液晶性コーティング液および偏光膜 | |
JP5153436B2 (ja) | 耐水性偏光膜の製造方法 | |
JP5210287B2 (ja) | 液晶性コーティング液および偏光膜 | |
WO2012124400A1 (ja) | 偏光フィルム、コーティング液、及び画像表示装置 | |
JP5276532B2 (ja) | 液晶性コーティング液および偏光膜 | |
JP2009192577A (ja) | 偏光膜 | |
JP5428091B2 (ja) | 偏光子、偏光子の製造方法、及び画像表示装置 | |
JP5695298B2 (ja) | 液晶性コーティング液および偏光膜 | |
JP2009115866A (ja) | コーティング液と偏光膜および偏光膜の製造方法 | |
WO2011045959A1 (ja) | コーティング液およびその製造方法、ならびに偏光膜 | |
JP2009104113A (ja) | コーティング液および偏光膜 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080003596.0 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10794002 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 20117005420 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13321439 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 10794002 Country of ref document: EP Kind code of ref document: A1 |