JPS6239686A - Cholesteric liquid crystal composition - Google Patents
Cholesteric liquid crystal compositionInfo
- Publication number
- JPS6239686A JPS6239686A JP60176942A JP17694285A JPS6239686A JP S6239686 A JPS6239686 A JP S6239686A JP 60176942 A JP60176942 A JP 60176942A JP 17694285 A JP17694285 A JP 17694285A JP S6239686 A JPS6239686 A JP S6239686A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- organic solvent
- cellulose
- crystal composition
- hydroxyethyl cellulose
- 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.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 13
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 title description 3
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 21
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims abstract description 8
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims abstract description 8
- 239000007864 aqueous solution Substances 0.000 claims abstract description 6
- 239000003960 organic solvent Substances 0.000 claims abstract description 6
- -1 hydroxyethyl group Chemical group 0.000 claims abstract description 5
- 238000006467 substitution reaction Methods 0.000 claims abstract description 4
- TWNIBLMWSKIRAT-VFUOTHLCSA-N levoglucosan Chemical group O[C@@H]1[C@@H](O)[C@H](O)[C@H]2CO[C@@H]1O2 TWNIBLMWSKIRAT-VFUOTHLCSA-N 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract description 12
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 abstract description 7
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical group OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 abstract description 3
- 239000003513 alkali Substances 0.000 abstract description 2
- 239000012046 mixed solvent Substances 0.000 abstract 1
- 229920002678 cellulose Polymers 0.000 description 11
- 239000001913 cellulose Substances 0.000 description 11
- 235000010980 cellulose Nutrition 0.000 description 11
- 239000000243 solution Substances 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 230000003098 cholesteric effect Effects 0.000 description 3
- 238000004040 coloring Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- 239000001856 Ethyl cellulose Substances 0.000 description 2
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 2
- 229920000168 Microcrystalline cellulose Polymers 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 229920002301 cellulose acetate Polymers 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 229920001249 ethyl cellulose Polymers 0.000 description 2
- 235000019325 ethyl cellulose Nutrition 0.000 description 2
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 2
- 230000002535 lyotropic effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000019813 microcrystalline cellulose Nutrition 0.000 description 2
- 239000008108 microcrystalline cellulose Substances 0.000 description 2
- 229940016286 microcrystalline cellulose Drugs 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-M Butyrate Chemical compound CCCC([O-])=O FERIUCNNQQJTOY-UHFFFAOYSA-M 0.000 description 1
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Natural products CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 239000005264 High molar mass liquid crystal Substances 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000004990 Smectic liquid crystal Substances 0.000 description 1
- 239000004974 Thermotropic liquid crystal Substances 0.000 description 1
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 229920001727 cellulose butyrate Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 238000001226 reprecipitation Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000005315 stained glass Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Liquid Crystal Substances (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はヒドロキシエチルセルロースの液晶成分として
の使用に関する。本発明は、さらに詳しく述べると、ヒ
ドロキシエチルセルロースのりオ使用に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to the use of hydroxyethylcellulose as a liquid crystal component. The present invention more particularly relates to the use of hydroxyethyl cellulose glue.
液晶は、分子の配列構造によりスメチック型、ネマチッ
ク型、コレステリック型に分類されており、さらにそれ
ぞれに溶液タイプのリオトロピック液晶と融液タイプの
サーモトロピック液晶が存在することは良く知られてい
る。Liquid crystals are classified into smectic, nematic, and cholesteric types depending on their molecular arrangement structure, and it is well known that each of these types includes solution-type lyotropic liquid crystals and melt-type thermotropic liquid crystals.
また、液晶を形成する分子の大きさによって低分子液晶
と高分子液晶に分けることができる。Furthermore, liquid crystals can be divided into low-molecular liquid crystals and polymer liquid crystals depending on the size of the molecules that form them.
高分子物質であるセルロース誘導体についても液晶を形
成することが発表されており、先述のいずれのタイプに
属するかについても多くの報告がある。It has been announced that cellulose derivatives, which are polymeric substances, also form liquid crystals, and there are many reports regarding which type of liquid crystals they belong to.
工業製品として生産されている酢酸セルロース、硝酸セ
ルロース、酢・酪酸セルロース、エチルセルロース、カ
ルボキシメチルセルロース、ヒドロキシプロピルセルロ
ース等も液晶を形成するので、液晶紡糸による強力繊維
の製造（特開昭５２−９６２３０、特開昭５９−４７４
１７）あるいは液晶表示装置（特開昭５５−９６５５）
としての利用といった研究も広く行なわれている。Cellulose acetate, cellulose nitrate, cellulose acetate/butyrate, ethyl cellulose, carboxymethyl cellulose, hydroxypropyl cellulose, etc. produced as industrial products also form liquid crystals. Kaisho 59-474
17) Or liquid crystal display device (Japanese Patent Application Laid-Open No. 55-9655)
Research on its use as a material is also widely conducted.
上述のセルロース誘導体の中で、ヒドロキンプロピルセ
ルロース（ＩＩＰＣ）はコレステリ・ツク型液晶を形成
し、その高濃度溶液は可視光線を選択的１こ反射し、そ
れの置かれた条件、例えば、・急変によって無色透明−
紫色一緑色一黄色一赤色一無色透明の範囲で可逆的に呈
色する。また高温ではｌｌＰｃ融液も上述の如き呈色が
見られると報告されて０る。Among the above-mentioned cellulose derivatives, hydroquinepropyl cellulose (IIPC) forms a cholesteritic liquid crystal, and its highly concentrated solution selectively reflects visible light, depending on the conditions under which it is placed, for example, Colorless and transparent due to sudden change
It reversibly colors in the range of purple, green, yellow, red, and colorless and transparent. It has also been reported that the llPc melt exhibits the above-mentioned coloration at high temperatures.
このように外的条件によって呈色が変化する現象を液晶
表示素子に利用することは充分期待さＡする。It is highly anticipated that the phenomenon of color change depending on external conditions will be utilized in liquid crystal display elements.
液晶表示素子等へのｌｌＰｃの利用は有望と考えられる
が、ＨＰＣは製造が困難であるため価格も高価であるこ
とが欠点と言える。ＲＰＣのように鮮かなコレステリッ
ク色を呈するセルロース誘導体としては、アセトキノプ
ロピルセルロース、２−ヒドロキン−３−メトキシプロ
ピルセルロースあるし）は２−ヒドロキシ−３−ビニル
プロピルセルロース等があるが、いずれも繁雑な反応を
繰り返したり、特殊な試薬を用いる必要があり実用的で
ない。Although the use of llPc in liquid crystal display elements and the like is considered promising, the disadvantage of HPC is that it is difficult to manufacture and is therefore expensive. Cellulose derivatives that exhibit a bright cholesteric color like RPC include acetoquinopropylcellulose, 2-hydroquine-3-methoxypropylcellulose, and 2-hydroxy-3-vinylpropylcellulose, but all of them are complicated. It is not practical as it requires repeated reactions and the use of special reagents.
本発明は、上記したような従来の技術の問題点を解決す
るため、既に工業的に広く行なわれている技術、工業的
に多量に製造されているものをベースにした、コレステ
リック色を呈するセルロース誘導体液晶を提供しようと
するものである。In order to solve the problems of the conventional technology as described above, the present invention is based on a technology that is already widely used industrially and a cellulose that exhibits a cholesteric color. The purpose is to provide a derivative liquid crystal.
本発明者は、いろいろなセルロース誘導体のなかで、ヒ
ドロキンエチルセルロース（ＩＥＣ）に着目して研究を
進めた結果、特定のＨＥＣは上述の問題点を解決するの
に有効である事実を新しく見い出した。この本発明のＨ
ＥＣは、セルロース分子の無水クルコース単位当りのヒ
ドロキシエチル基のモル置換度（以下、この技術分野に
おいて広く用いられているようにＭＳと略称する）が６
以上であることを特徴とする。As a result of conducting research focusing on hydroquine ethyl cellulose (IEC) among various cellulose derivatives, the present inventor newly discovered the fact that a specific HEC is effective in solving the above-mentioned problems. . H of this invention
EC refers to the degree of molar substitution of hydroxyethyl groups per anhydrous glucose unit of the cellulose molecule (hereinafter abbreviated as MS as widely used in this technical field) of 6.
It is characterized by the above.
なお、このヒドロキシエチル基のＭＳ値は、常法である
モルガン法により、セルロース分子の各無水グルコース
単位に付加したエチレンオキシドのモル敢から求めた。The MS value of the hydroxyethyl group was determined from the molar mass of ethylene oxide added to each anhydroglucose unit of the cellulose molecule by the conventional Morgan method.
さらに本発明のＩＩＥｃは、水溶液中で測定した場合、
０．３〜７ｄｌ／ｇの範囲に含まれる極限粘度数を有す
ることが確認された。ＨＥＣの題限粘度数も常法に従い
、２５℃の水溶液中での粘度測定の結果から求めた。Furthermore, when IIEc of the present invention is measured in an aqueous solution,
It was confirmed that it had an intrinsic viscosity within the range of 0.3 to 7 dl/g. The limiting viscosity number of HEC was also determined from the results of viscosity measurement in an aqueous solution at 25° C. according to a conventional method.
ＭＳが６未満であると、液晶は形成するが、本発明が目
的とする鮮やかな呈色するものは得難くなる。極限粘度
数が上記範囲より小さいと、ＨＥＣ製造工程における精
製が困難となり、また、この範囲を超える極限粘度数を
らつＨＥＣでは高濃度溶液を調整することができず液晶
を得ることができない。If MS is less than 6, liquid crystals will be formed, but it will be difficult to obtain the vivid colors that are the object of the present invention. If the intrinsic viscosity is smaller than the above range, purification in the HEC manufacturing process will be difficult, and with HEC having an intrinsic viscosity exceeding this range, a highly concentrated solution cannot be prepared and liquid crystal cannot be obtained.
本発明に用いる）ＩＥｃは公知の［ｌＥＣ製造法に従っ
て、セルロース物質とエチレンオキシド（ＥＯ）を適当
な有機溶媒中でアルカリの存在下に繰り返し反応させる
、ことによって得られる。IEc (used in the present invention) can be obtained by repeatedly reacting cellulose material and ethylene oxide (EO) in a suitable organic solvent in the presence of an alkali according to a known method for producing IEC.
本発明に用いるＩＩＥｃは、上記したように６以上のＭ
Ｓを有することの結果、そしてまた極限粘度数も影響し
て水のみならず、メタノール、ピリジン、ジメチルスル
ホキシド、ジメチルホルムアミド、ｆｉ＋、−７７？ｌ
＋ −＋ Ｉ＋、 ／＋Ｃａ！
Ｊ３ＭＪ！＋Ｉ 〒 Ｌ＋Ｊ’））ｆリコール等に
も可溶である。IIEc used in the present invention has an M of 6 or more as described above.
As a result of having S, and also the intrinsic viscosity, not only water but also methanol, pyridine, dimethyl sulfoxide, dimethyl formamide, fi+, -77? l
+ −+ I+, /+Ca!
J3MJ! +I 〒 L+J')) It is also soluble in f-recall, etc.
本発明に用いる溶媒としては、上記したらの単独でもよ
しあるいは２種類もしくはそれ以上を混合したものでも
よい。The solvent used in the present invention may be one of the above-mentioned solvents, or a mixture of two or more thereof.
本発明のりオトロピック型のコレステリック液晶が、呈
色挙動を示す上で、特に重要なの（よＨＥＣの濃度であ
る。In order for the otropic cholesteric liquid crystal of the present invention to exhibit coloring behavior, the concentration of HEC is particularly important.
＋１Ｅｃ溶液は１２度変化に応じてもその呈色を変える
が、概して低濃度溶液は低温領域で呈色し１，１５度の
増大に伴い呈色変化を示す温度領域力く増大する。A +1Ec solution changes its color even in response to a change of 12 degrees, but in general, low-concentration solutions develop color in a low temperature range, and as the temperature increases by 1.15 degrees, the temperature range in which the color changes strongly increases.
一例として、ＭＳ７．８、極限粘度数１．４の ＨＥ
Ｃのエチレングリコール溶液の呈色の濃度とｉＭＬ度へ
の本発明のリオトロピック型のコレステリ・ツク液晶の
呈色状態は上述のような濃度、温度の（王力＼、ＭＳ、
重合度、溶媒の種類にも依存して変動する。As an example, HE with MS7.8 and intrinsic viscosity number 1.4
The coloring state of the lyotropic cholesteric liquid crystal of the present invention depends on the concentration and iML degree of the ethylene glycol solution of C.
It varies depending on the degree of polymerization and the type of solvent.
本発明の液晶組成物は、表示素子、装身具、玩具、ステ
ンドグラス等に何列に使用することができる。The liquid crystal composition of the present invention can be used in display elements, accessories, toys, stained glass, etc. in any number of rows.
実施例１〜３
木材バルブより調整した微結晶セルロース３７２ｇ１苛
性ソーダ１２．０ｇ、水８２．６ｇ５ｔｅｒ、−ブチル
アルコール３６３８ｇを１えのセパラブルフラスコに仕
込み、１５°Ｃて１時間撹拌した。次いで４２．６ｇの
ＥＯを添加し、１５°Ｃで２０分間撹拌混合した。その
後５０℃で９０分加熱し、さらに７０°Ｃで８０分間加
熱した。次いで室温に冷却した後、さらにＥＯを４２．
６ｇ加え、上記温度条件により加熱した。この冷却−Ｅ
Ｏ添加−加熱の操り返しを重ね所望のＭＳのｌ１ＥＣを
得た。総ＥＯ添加量と上記繰り返しの回数とＩＥＣのＭ
Ｓの関係は表１に記した。このようにして得られたＨＥ
Ｃはいずれも酢酸で苛性ソーダを中和した後、ドープ状
のものはそれを水で希釈し、透析により脱塩しｆこ。Examples 1 to 3 372 g of microcrystalline cellulose prepared using a wood bulb, 12.0 g of caustic soda, 82.6 g of water, and 3,638 g of butyl alcohol were charged into a single separable flask and stirred at 15°C for 1 hour. Then, 42.6 g of EO was added and mixed with stirring for 20 minutes at 15°C. Thereafter, it was heated at 50°C for 90 minutes, and further heated at 70°C for 80 minutes. Then, after cooling to room temperature, 42% more EO was added.
6g was added and heated under the above temperature conditions. This cooling-E
The desired MS 11EC was obtained by repeating O addition and heating. Total amount of EO added, number of repetitions above, and M of IEC
The relationship between S is shown in Table 1. HE thus obtained
In both cases, after neutralizing caustic soda with acetic acid, dope-like products are diluted with water and desalted by dialysis.
その後、エバポレーターでａ縮して、多量のアセトン中
で再生した。沈澱物は再度水に溶解しアセトン中で再生
した。Thereafter, it was a-condensed in an evaporator and regenerated in a large amount of acetone. The precipitate was redissolved in water and regenerated in acetone.
この再沈澱操作を数回繰り返した。次いで、沈澱物を５
０°Ｃで真空乾燥した。This reprecipitation operation was repeated several times. Then, the precipitate was
Vacuum drying was performed at 0°C.
得られた各ＨＥＣをエチレングリコールに溶かし各濃度
の溶液を調整し、５°Ｃおよび２５℃での呈色状態を観
察した。結果をまとめて表１に示した。Each HEC obtained was dissolved in ethylene glycol to prepare solutions of various concentrations, and the state of color development at 5°C and 25°C was observed. The results are summarized in Table 1.
（以下余白）
表１
比較例１〜２
実施例１〜３で述べた手法で、微結晶セルロースを原料
にＭＳ２および４のＩＩＥｃを調整した。ｌｌＥＣ濃度
７０．７５．８０．８５．９０．９５重量％のｌｌＥＣ
〜水組成物を室温（約２５°Ｃ）で調整した。８０％以
上の組成物では水との均質混合物は得られず、固相部分
と溶液相部分が混在する状態であり、部分的にも呈色状
態は認められなかった。そこでＨＥＣの低濃度水溶液を
調整した後、水を揮散させて、ＩＩ Ｅ Ｃ５度８０％
以上の上記組成物を得たが、や＼粘着性のフィルム或は
塊状物であって、やはり呈色状態は認められなかった。(Margin below) Table 1 Comparative Examples 1-2 IIEc of MS2 and 4 was prepared using microcrystalline cellulose as a raw material by the method described in Examples 1-3. llEC concentration of 70.75.80.85.90.95% by weight
~Water compositions were prepared at room temperature (approximately 25°C). When the composition was 80% or more, a homogeneous mixture with water was not obtained, and a solid phase portion and a solution phase portion were mixed, and no coloration was observed even in some parts. Therefore, after preparing a low concentration aqueous solution of HEC, the water was volatilized and the II E C5 degree was 80%.
The above composition was obtained, but it was a somewhat sticky film or lump, and no coloration was observed.
）ＩＥＣａ度７０．７５％の組成物も呈色しなかった。) A composition with an IECa degree of 70.75% also did not develop color.
実施例４〜５
重合度の異なるセルロースを原料に実施例２と同じ処方
と条件でＨＥＣを調整した。セルロース原料、得られた
ＨＥＣのＭＳ、極限粘度数はまとめて表２に示した。各
ＨＥＣをエチレングリコールに溶かし、各濃度の、溶液
を調整した。°５℃および２５°Ｃでの呈色状態を観察
した。結果をまとめて表２に示した。Examples 4 to 5 HEC was prepared using cellulose having different degrees of polymerization as raw materials and using the same formulation and conditions as in Example 2. The cellulose raw material, the MS and intrinsic viscosity of the obtained HEC are shown in Table 2. Each HEC was dissolved in ethylene glycol to prepare solutions at various concentrations. The color state was observed at 5°C and 25°C. The results are summarized in Table 2.
表２
実施例６〜９
実施例２のｌｌＥＣを用いて、表３に示す各溶媒で９０
および９５重量％溶液を調整し、２５℃での呈色状態を
観察した結果を表３に示した。Table 2 Examples 6 to 9 Using llEC of Example 2, each solvent shown in Table 3 was used at 90%
Table 3 shows the results of preparing a 95% by weight solution and observing the coloring state at 25°C.
表 ３Table 3
Claims (1)
ル置換度が６以上であるヒドロキシエチルセルロースを
液晶成分として含有することを特徴とする液晶組成物。 ２、前記ヒドロキシエチルセルロースの水溶液での極限
粘度数が０．３〜７ｄｌ／ｇである、特許請求の範囲第
１項に記載の液晶組成物。 ３、前記ヒドロキシエチルセルロースを水、有機溶剤ま
たは有機溶剤水溶液に溶解してなる、特許請求の範囲第
１項または第２項に記載の液晶組成物。[Scope of Claims] 1. A liquid crystal composition comprising hydroxyethylcellulose having a degree of molar substitution of hydroxyethyl groups per anhydroglucose unit of 6 or more as a liquid crystal component. 2. The liquid crystal composition according to claim 1, wherein the hydroxyethylcellulose has an intrinsic viscosity of 0.3 to 7 dl/g in an aqueous solution. 3. The liquid crystal composition according to claim 1 or 2, wherein the hydroxyethylcellulose is dissolved in water, an organic solvent, or an aqueous solution of an organic solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60176942A JPH0723471B2 (en) | 1985-08-13 | 1985-08-13 | Cholesteric liquid crystal composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60176942A JPH0723471B2 (en) | 1985-08-13 | 1985-08-13 | Cholesteric liquid crystal composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6239686A true JPS6239686A (en) | 1987-02-20 |
| JPH0723471B2 JPH0723471B2 (en) | 1995-03-15 |
Family
ID=16022431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60176942A Expired - Lifetime JPH0723471B2 (en) | 1985-08-13 | 1985-08-13 | Cholesteric liquid crystal composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0723471B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5215757A (en) * | 1991-03-22 | 1993-06-01 | The Procter & Gamble Company | Encapsulated materials |
| EP0671490A1 (en) * | 1994-03-11 | 1995-09-13 | Sumitomo Electric Industries, Ltd. | Method of and crucible for preparing compound semiconductor crystal |
| WO1995032248A1 (en) * | 1994-05-24 | 1995-11-30 | Daimler-Benz Aktiengesellschaft | Effect lacquer and lacquering, in particular for car bodies, involving the use of liquid crystal interference pigments |
| EP0775737A1 (en) * | 1995-11-27 | 1997-05-28 | Daimler-Benz Aktiengesellschaft | Liquid cristalline etherified cellulose ether as interference pigment active coloring substance for effect lacquer e.g. lacquering, in particular for car bodies |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1124054A (en) * | 1997-07-09 | 1999-01-29 | Daicel Chem Ind Ltd | Cholesteric liquid crystal display element |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5437772A (en) * | 1977-08-31 | 1979-03-20 | Ishii Hideki | Forming method |
| JPS5757729A (en) * | 1980-09-24 | 1982-04-07 | Asahi Chem Ind Co Ltd | Molding of cellulose derivative liquid crystal |
-
1985
- 1985-08-13 JP JP60176942A patent/JPH0723471B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5437772A (en) * | 1977-08-31 | 1979-03-20 | Ishii Hideki | Forming method |
| JPS5757729A (en) * | 1980-09-24 | 1982-04-07 | Asahi Chem Ind Co Ltd | Molding of cellulose derivative liquid crystal |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5215757A (en) * | 1991-03-22 | 1993-06-01 | The Procter & Gamble Company | Encapsulated materials |
| EP0671490A1 (en) * | 1994-03-11 | 1995-09-13 | Sumitomo Electric Industries, Ltd. | Method of and crucible for preparing compound semiconductor crystal |
| WO1995032248A1 (en) * | 1994-05-24 | 1995-11-30 | Daimler-Benz Aktiengesellschaft | Effect lacquer and lacquering, in particular for car bodies, involving the use of liquid crystal interference pigments |
| EP0775737A1 (en) * | 1995-11-27 | 1997-05-28 | Daimler-Benz Aktiengesellschaft | Liquid cristalline etherified cellulose ether as interference pigment active coloring substance for effect lacquer e.g. lacquering, in particular for car bodies |
| US5814141A (en) * | 1995-11-27 | 1998-09-29 | Daimler-Benz Ag | Liquid crystalline cellulose (ether) ethers as interferentially effective chromophoric substances |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0723471B2 (en) | 1995-03-15 |
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