JP2017039549A - Container for storage or transport of liquid crystal - Google Patents
Container for storage or transport of liquid crystal Download PDFInfo
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- JP2017039549A JP2017039549A JP2016164720A JP2016164720A JP2017039549A JP 2017039549 A JP2017039549 A JP 2017039549A JP 2016164720 A JP2016164720 A JP 2016164720A JP 2016164720 A JP2016164720 A JP 2016164720A JP 2017039549 A JP2017039549 A JP 2017039549A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
- B65D85/48—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for glass sheets
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Abstract
Description
本発明は、安定した品質維持が求められる有機材料である液晶材料に使用する容器及びその容器を使った貯蔵又は輸送の方法に関する。 The present invention relates to a container used for a liquid crystal material which is an organic material for which stable quality maintenance is required, and a storage or transport method using the container.
液晶表示素子は、時計、電卓をはじめとして、各種測定機器、自動車用パネル、ワードプロセッサー、電子手帳、プリンター、コンピューター、テレビ、時計、広告表示板等に用いられるようになっている。液晶表示方式としては、その代表的なものにＴＮ（ツイステッド・ネマチック）型、ＳＴＮ（スーパー・ツイステッド・ネマチック）型、ＴＦＴ（薄膜トランジスタ）を用いた垂直配向型やＩＰＳ（イン・プレーン・スイッチング）型等がある。これらの液晶表示素子に用いられる液晶材料は、一般的には数種類から数十種類の化合物から構成される液状の組成物であって、それぞれの使用される用途や表示方式によって、最適な物性値や性能を求められる。更に、液晶表示素子の信頼性や寿命等の観点から水分、空気、熱、光などの外的要因に対して安定であることも求められる。また、液晶材料は、イオン性不純物等が混入すると液晶表示素子の電気的性能が悪化するため、その保管においても十分な管理が求められる。 Liquid crystal display elements are used in various measuring instruments, automobile panels, word processors, electronic notebooks, printers, computers, televisions, watches, advertisement display boards, as well as watches and calculators. Typical liquid crystal display methods include TN (twisted nematic) type, STN (super twisted nematic) type, vertical alignment type using TFT (thin film transistor) and IPS (in-plane switching) type. Etc. The liquid crystal material used in these liquid crystal display elements is generally a liquid composition composed of several to several tens of compounds, and has the optimum physical properties depending on the intended use and display method. And performance is required. Furthermore, the liquid crystal display element is required to be stable against external factors such as moisture, air, heat, and light from the viewpoint of reliability and lifetime. Moreover, since liquid crystal material deteriorates the electrical performance of the liquid crystal display element when ionic impurities or the like are mixed in, the liquid crystal material is required to be sufficiently managed in its storage.
液晶材料の保管には、１００ｍＬから１Ｌ程度のガラス瓶が使用されることが一般的であるが、液晶表示素子の大型化が進み、使用される液晶材料が増えることに伴って、液晶材料を保管する容器も大容量であることが必要となってきている。 For storage of liquid crystal materials, glass bottles of about 100 mL to 1 L are generally used. However, liquid crystal materials are stored as the liquid crystal display elements increase in size and use more liquid crystal materials. The container to be used is also required to have a large capacity.
しかし、大容量のガラス瓶はコストがかかり、また、運搬時にガラス瓶を破損してしまう危険性もある。また、液晶表示素子を製造するために液晶材料を液晶パネルに封入する方法として、液晶材料の保管容器に液晶材料を注入する装置へ導入する管を直接繋ぎ、ポンプ等で送り込む方式が提案されている。しかしながら、液晶表示素子の大型化に伴い、液晶材料を送り込むための圧力が大きくなり、そのために液晶材料の保管容器の耐圧も十分に強いものが求められるようになっている。 However, large-capacity glass bottles are costly and there is a risk of breaking the glass bottles during transportation. In addition, as a method of sealing a liquid crystal material in a liquid crystal panel in order to manufacture a liquid crystal display element, a method of directly connecting a pipe introduced into a device for injecting the liquid crystal material into a liquid crystal material storage container and feeding it with a pump or the like has been proposed. Yes. However, as the size of the liquid crystal display element increases, the pressure for feeding the liquid crystal material increases, and for this reason, a liquid container with a sufficiently high pressure resistance is required.
このような中、ステンレス製の液晶材料の貯蔵容器と液晶材料を注入するユニットが一体化した液晶表示素子の製造装置が提案されている。（特許文献１）
また、耐腐食性鋼鉄製の容器を用い。破損防止、液晶材料の汚染防止およびリユースによる環境的調和の改善を目的とした輸送および貯蔵の方法が提案されている。（特許文献２）
しかしながら、貯蔵や輸送の際にこれまで以上に高いレベルでの液晶材料の長期的な品質維持が求められていた。
Under such circumstances, a liquid crystal display element manufacturing apparatus in which a stainless steel liquid crystal material storage container and a unit for injecting liquid crystal material are integrated has been proposed. (Patent Document 1)
Also, use a container made of corrosion resistant steel. Transportation and storage methods have been proposed for the purpose of preventing damage, preventing contamination of liquid crystal materials, and improving environmental harmony through reuse. (Patent Document 2)
However, long-term quality maintenance of liquid crystal materials at a higher level than before has been required during storage and transportation.
本発明が解決しようする課題は、衝撃に対する破損等の問題が無く液晶材料をガス等の圧力により直接製造装置に移し替える作業にも耐えうることと、大型であっても軽量であることを両立する容器であって、更に液晶材料の品質の長期安定性を維持することができる容器を提供することである。また、これを用いた貯蔵又は輸送の方法を提供することである。 The problem to be solved by the present invention is that there is no problem such as breakage due to impact and that it can withstand the work of transferring the liquid crystal material directly to the manufacturing apparatus by the pressure of gas etc. and that it is lightweight even if it is large It is another object of the present invention to provide a container that can maintain the long-term stability of the quality of the liquid crystal material. Moreover, it is providing the method of the storage or transport using this.
本発明は、上記課題を解決するために鋭意検討した結果、剛直で気密性を有し、丈夫で軽く、更に特定の素材で構成される容器とすることで、長期的に品質安定性を与えることのできる貯蔵および輸送のための容器が得られることを見出し本発明の完成に至った。 As a result of intensive studies to solve the above problems, the present invention provides long-term quality stability by making the container rigid and airtight, strong and light, and made of a specific material. It has been found that a container for storage and transport that can be obtained is obtained and the present invention has been completed.
すなわち、剛直で気密性を有しチタンを主成分とする素材から成ることを特徴とする有機材料の貯蔵又は運搬のための容器を提供する。 That is, the present invention provides a container for storing or transporting an organic material characterized in that it is made of a material that is rigid and airtight and has titanium as a main component.
本発明の容器は、耐衝撃性、耐圧性、軽量性を有することに加え、液晶材料の比抵抗値や電圧保持率を高い状態で貯蔵および輸送することができ、更に長期間において、その状態を維持することができることから、液晶材料の長期の品質安定性を与える。本発明の容器は、ＴＮ表示モード、ＩＰＳ表示モード、ＶＡ表示モード、ＰＳＶＡ表示モード等のＴＦＴ駆動液晶表示素子を作製するために用いられる液晶材料の貯蔵および輸送に有用である。 In addition to having impact resistance, pressure resistance, and light weight, the container of the present invention can be stored and transported in a state where the specific resistance value and voltage holding ratio of the liquid crystal material are high, and the state is maintained for a long period of time. Can maintain the long-term quality stability of the liquid crystal material. The container of the present invention is useful for storing and transporting a liquid crystal material used for manufacturing a TFT-driven liquid crystal display element such as a TN display mode, an IPS display mode, a VA display mode, and a PSVA display mode.
本発明の容器は、品質の安定性を求められる有機材料、特に液晶材料の貯蔵や輸送に用いられる。 The container of the present invention is used for storage and transportation of organic materials, particularly liquid crystal materials, for which quality stability is required.
本発明の容器は、正圧や負圧に対して気密性を有し、衝撃に耐えうる剛直性を有するが、圧力容器としての機能を有することが好ましい。正圧にする場合、容器内に圧縮空気や窒素ガスやアルゴンガス等の不活性ガスを封入するための分配器や圧力計を取り付けられるようになっていることが好ましく、負圧にする場合、真空ポンプによる減圧化を行うため配管を取り付けられるようになっていることが好ましい。 The container of the present invention has airtightness against positive pressure and negative pressure and has rigidity capable of withstanding an impact, but preferably has a function as a pressure container. When making a positive pressure, it is preferable to be able to attach a distributor or pressure gauge for sealing an inert gas such as compressed air, nitrogen gas or argon gas in the container. It is preferable that a pipe can be attached to reduce the pressure by a vacuum pump.
また、本発明の容器は、内容物の品質の安定性の観点から水や空気に対する気密性を有することが好ましい。 Moreover, it is preferable that the container of this invention has airtightness with respect to water or air from a viewpoint of stability of the quality of the content.
本発明の容器は、チタンを主成分とする素材より成る。該素材は容器に入れられる有機材料と接触する内表面に使用されることが必要であるが、容器全体に使用されていても良い。 The container of the present invention is made of a material mainly composed of titanium. The material needs to be used on the inner surface that comes into contact with the organic material placed in the container, but may be used for the entire container.
本発明の容器の内表面は、特定の処理等がなされていても良い。 The inner surface of the container of the present invention may be subjected to a specific treatment.
本発明の容器の容量は、１Ｌ以上であることが好ましく、５Ｌ以上であることが更に好ましい。軽量性を有し、耐圧性、衝撃性に耐えうるので、１００Ｌ以上であることもできる。 The capacity of the container of the present invention is preferably 1 L or more, and more preferably 5 L or more. Since it is lightweight and can withstand pressure resistance and impact resistance, it can also be 100 L or more.
本発明の容器は、比抵抗等の電気的性能の長期的安定性が求められる電子デバイス製造用有機材料に使用されることが好ましく、液晶表示素子用の液晶材料に使用されることが更に好ましく、ＴＦＴ駆動液晶表示素子用の液晶材料に使用されることが特に好ましい。 The container of the present invention is preferably used for an organic material for manufacturing an electronic device that requires long-term stability of electrical performance such as specific resistance, and more preferably used for a liquid crystal material for a liquid crystal display element. It is particularly preferable to be used as a liquid crystal material for TFT-driven liquid crystal display elements.
本発明の容器に使用される液晶材料として、例えば、フッ素基が導入された液晶化合物を含有する液晶組成物が挙げられる。 Examples of the liquid crystal material used in the container of the present invention include a liquid crystal composition containing a liquid crystal compound into which a fluorine group is introduced.
フッ素基が導入された液晶化合物として、具体的には以下のようなものが挙げられる。 Specific examples of the liquid crystal compound into which a fluorine group is introduced include the following.
式中、Ｒ１１は炭素数１〜１５のアルキル基を表し、該アルキル基中の１つ又は２つ以上の−ＣＨ２−は、酸素原子が直接隣接しないように、−Ｏ−、−ＣＨ＝ＣＨ−、−ＣＯ−、−ＯＣＯ−、−ＣＯＯ−、−ＣＦ２Ｏ−又は−ＯＣＦ２−で置換されてよく、該アルキル基中の１つ又は２つ以上の水素原子は任意にハロゲンで置換されていてもよく、Ａ１１、Ａ１２はそれぞれ独立して下記の何れかの構造 In the formula, R 11 represents an alkyl group having 1 to 15 carbon atoms, and one or two or more —CH 2 — in the alkyl group is —O—, —CH, so that an oxygen atom is not directly adjacent to each other. ═CH—, —CO—, —OCO—, —COO—, —CF 2 O— or —OCF 2 —, wherein one or more hydrogen atoms in the alkyl group are optionally halogenated And A 11 and A 12 are each independently any one of the following structures:
（該構造中シクロヘキサン環の１つ又は２つ以上の−ＣＨ２−は酸素原子が直接隣接しないように、−Ｏ−で置換されていてもよく、Ｘ６１及びＸ６２はそれぞれ独立して−Ｈ、−Ｃｌ、−Ｆ、−ＣＦ３又は−ＯＣＦ３を表す。）を表し、Ｘは−Ｈ、−Ｃｌ又は−Ｆを表し、Ｙは−Ｆ、−ＯＣＨＦ２、−ＣＦ３又は−ＯＣＦ３を表し、Ｚ１１及びＺ１２はそれぞれ独立して単結合、−ＣＨ＝ＣＨ−、−ＣＨ２Ｏ−、−ＯＣＨ２−、−ＣＨ２ＣＨ２−、−（ＣＨ２）４−、−ＯＣＦ２−又は−ＣＦ２Ｏ−を表し、ｍ１は０〜４を表し、Ａ１２及び／又はＺ１２が複数存在する場合、それらは同一であっても、異なっていてもよい。）
また、その他のフッ素基が導入された液晶化合物として、具体的には以下のようなものが挙げられる。
(In the structure, one or more —CH 2 — of the cyclohexane ring may be substituted with —O— so that the oxygen atom is not directly adjacent to each other, and X 61 and X 62 are each independently — H represents —H, —Cl, —F, —CF 3 or —OCF 3 ), X represents —H, —Cl or —F, and Y represents —F, —OCHF 2 , —CF 3 or —OCF. 3 and Z 11 and Z 12 are each independently a single bond, —CH═CH—, —CH 2 O—, —OCH 2 —, —CH 2 CH 2 —, — (CH 2 ) 4 —, — OCF 2 - or -CF 2 O-a represents, m 1 represents 0 to 4, when a 12 and / or Z 12 is plurally present, they may be the same or different. )
Specific examples of the liquid crystal compound into which other fluorine groups are introduced include the following.
（式中、Ｒ２１及びＲ２２はそれぞれ独立して炭素数１〜１５のアルキル基を表し、該アルキル基中の１つ又は２つ以上の−ＣＨ２−は、酸素原子が直接隣接しないように、−Ｏ−、−ＣＨ＝ＣＨ−、−ＣＯ−、−ＯＣＯ−、−ＣＯＯ−、−ＣＦ２Ｏ−又は−ＯＣＦ２−で置換されてよく、該アルキル基中の１つ又は２つ以上の水素原子は任意にハロゲンで置換されていてもよく、Ａ２１、Ａ２２はそれぞれ独立して下記の何れかの構造 (In the formula, R 21 and R 22 each independently represent an alkyl group having 1 to 15 carbon atoms, and one or two or more —CH 2 — in the alkyl group is not directly adjacent to an oxygen atom. May be substituted with —O—, —CH═CH—, —CO—, —OCO—, —COO—, —CF 2 O— or —OCF 2 —, one or two of the alkyl groups. The above hydrogen atoms may be optionally substituted with halogen, and A 21 and A 22 are each independently one of the following structures:
を表し、Ｚ２１及びＺ２２はそれぞれ独立して単結合、−ＣＨ＝ＣＨ−、−ＣＨ２Ｏ−、−ＯＣＨ２−、−ＣＨ２ＣＨ２−、−（ＣＨ２）４−、−ＯＣＦ２−又は−ＣＦ２Ｏ−を表し、ｍ２及びｍ３は０〜３を表すが、ｍ２＋ｍ３は１〜３を表し、Ａ２１、Ａ２２、Ｚ２１及び／又はＺ２２が複数存在する場合、それらは同一であっても、異なっていてもよい。）
本発明の容器に使用される液晶材料には、フッ素基が導入された液晶化合物以外の液晶化合物も含有することができる。具体的には以下のような一般式（ＩＩＩ−Ａ）〜一般式（ＩＩＩ−Ｊ）で表される化合物が挙げられる。
Z 21 and Z 22 are each independently a single bond, —CH═CH—, —CH 2 O—, —OCH 2 —, —CH 2 CH 2 —, — (CH 2 ) 4 —, —OCF. 2 -, or -CF 2 O-, although m 2 and m 3 represent 0 to 3, m 2 + m 3 represents 1~3, a 21, a 22, Z 21 and / or Z 22 is more If present, they may be the same or different. )
The liquid crystal material used in the container of the present invention can also contain a liquid crystal compound other than a liquid crystal compound into which a fluorine group has been introduced. Specific examples include compounds represented by the following general formula (III-A) to general formula (III-J).
（式中、Ｒ５及びＲ６はそれぞれ独立して炭素数１〜１５のアルキル基を表し、該アルキル基中の１つ又は２つ以上の−ＣＨ２−は、酸素原子が直接隣接しないように、−Ｏ−、−ＣＨ＝ＣＨ−、−ＣＯ−、−ＯＣＯ−、−ＣＯＯ−、−ＣＦ２Ｏ−又は−ＯＣＦ２−で置換されてよく、該アルキル基中の１つ又は２つ以上の水素原子は任意にハロゲンで置換されていてもよい。）
これらの液晶化合物は単独で用いても、複数を混合して用いても良い。
(In the formula, R 5 and R 6 each independently represents an alkyl group having 1 to 15 carbon atoms, and one or two or more —CH 2 — in the alkyl group is not directly adjacent to an oxygen atom. May be substituted with —O—, —CH═CH—, —CO—, —OCO—, —COO—, —CF 2 O— or —OCF 2 —, one or two of the alkyl groups. (The above hydrogen atoms may be optionally substituted with halogen.)
These liquid crystal compounds may be used alone or in combination.
ＴＦＴ駆動用液晶表示素子に用いられる液晶材料は、高比抵抗値あるいは高電圧保持率を有し、更にその経時安定性を強く求められることから、本発明の容器は好適である。特に、比抵抗値１．０×１０１２Ω・ｃｍ以上の液晶材料に適用することが好ましく、１．０×１０１３Ω・ｃｍ以上の液晶材料に適用することがより好ましく、１．０×１０１４Ω・ｃｍ以上の液晶材料に適用することが更に好ましい。 The container of the present invention is suitable because the liquid crystal material used for the TFT driving liquid crystal display element has a high specific resistance value or a high voltage holding ratio, and its stability over time is strongly required. In particular, it is preferably applied to a liquid crystal material having a specific resistance value of 1.0 × 10 12 Ω · cm or more, more preferably applied to a liquid crystal material having a specific resistance value of 1.0 × 10 13 Ω · cm or more. More preferably, it is applied to a liquid crystal material of 10 14 Ω · cm or more.
本発明の容器は、チタンを主成分とする素材とすることで液晶材料の比抵抗や電圧保持率等の電気的性能を劣化させることなく、長期間に渡って、変化が極めて小さく、特性の維持をすることができるため、貯蔵および輸送に使用することが好ましい。また、液晶材料を貯蔵あるいは輸送に使用している本発明の容器を配管等で、そのまま液晶表示素子の製造装置に連結することもできる。 The container of the present invention is made of a material mainly composed of titanium, so that the electrical performance such as the specific resistance and voltage holding ratio of the liquid crystal material is not deteriorated, and the change is extremely small over a long period of time. Since it can be maintained, it is preferably used for storage and transportation. Further, the container of the present invention in which the liquid crystal material is used for storage or transportation can be directly connected to a liquid crystal display element manufacturing apparatus by piping or the like.
本発明の容器は、輸送の際の移動を容易するために容器の底に底車等を取り付けることもできる。 In the container of the present invention, a bottom wheel or the like can be attached to the bottom of the container in order to facilitate movement during transportation.
以下に実施例を挙げて本発明を更に詳述するが、本発明はこれらの実施例に限定されるものではない。また、以下の実施例及び比較例の組成物における「％」は『質量％』を意味する。
実施例において化合物の記載について以下の略号を用いる。なお、ｎは自然数を表す。
（側鎖）
-n -CnH2n+1 炭素原子数ｎの直鎖状のアルキル基
n- CnH2n+1- 炭素原子数ｎの直鎖状のアルキル基
-On -OCnH2n+1 炭素原子数ｎの直鎖状のアルコキシル基
nO- CnH2n+1O- 炭素原子数ｎの直鎖状のアルコキシル基
-V -CH=CH2
V- CH2=CH-
-V1 -CH=CH-CH3
1V- CH3-CH=CH-
-2V -CH2-CH2-CH=CH3
V2- CH3=CH-CH2-CH2-
-2V1 -CH2-CH2-CH=CH-CH3
1V2- CH3-CH=CH-CH2-CH2
（連結基）
-n- -CnH2n-
-nO- -CnH2n-O-
-On- -O-CnH2n-
-COO- -C(=O)-O-
-OCO- -O-C(=O)-
-CF2O- -CF2-O-
-OCF2- -O-CF2-
（環構造）
EXAMPLES The present invention will be described in further detail with reference to examples below, but the present invention is not limited to these examples. Further, “%” in the compositions of the following Examples and Comparative Examples means “% by mass”.
The following abbreviations are used for the description of compounds in the examples. Note that n represents a natural number.
(Side chain)
-n -C n H 2n + 1 linear alkyl group with n carbon atoms
n-C n H 2n + 1- linear alkyl group having n carbon atoms
-On -OC n H 2n + 1 linear alkoxyl group with n carbon atoms
nO- C n H 2n + 1 O- Linear alkoxyl group with n carbon atoms
-V -CH = CH 2
V- CH 2 = CH-
-V1 -CH = CH-CH 3
1V- CH 3 -CH = CH-
-2V -CH 2 -CH 2 -CH = CH 3
V2- CH 3 = CH-CH 2 -CH 2-
-2V1 -CH 2 -CH 2 -CH = CH-CH 3
1V2- CH 3 -CH = CH-CH 2 -CH 2
(Linking group)
-n- -C n H 2n-
-nO- -C n H 2n -O-
-On- -OC n H 2n -
-COO- -C (= O) -O-
-OCO- -OC (= O)-
-CF2O- -CF 2 -O-
-OCF2- -O-CF 2-
(Ring structure)
実施例中、測定した特性は以下の通りである。 In the examples, the measured characteristics are as follows.
Ｔｎｉ ：ネマチック相−等方性液体相転移温度（℃）
Ｔｃｎ ：固体相−ネマチック相転移温度（℃）
Δｎ ：２０℃における屈折率異方性
Δε ：２０℃における誘電率異方性
η ：２０℃における粘度（ｍＰａ・ｓ）
γ１ ：２０℃における回転粘度（ｍＰａ・ｓ）
Ｋ３３ ：２０℃における弾性定数Ｋ３３（ｐＮ）
比抵抗値 ：２５℃における比抵抗値（Ω・ｃｍ）
電圧保持率：６０Ｈｚ、１Ｖ印加条件での６０℃における電圧保持率（％）
イオン密度：０．０５Ｈｚ、２０Ｖ印加条件での６０℃におけるイオン密度（ｐＣ／ｃｍ−３）
また、重合性化合物含有液晶組成物に使用した重合性化合物の代表例として式（Ｉｂ−３）の化合物を用いたが、本発明は該重合性化合物に限定されるものではない。
T ni : Nematic phase-isotropic liquid phase transition temperature (° C.)
T cn : Solid phase-nematic phase transition temperature (° C.)
Δn: Refractive index anisotropy at 20 ° C. Δε: Dielectric anisotropy at 20 ° C. η: Viscosity at 20 ° C. (mPa · s)
γ 1 : rotational viscosity at 20 ° C. (mPa · s)
K 33 : Elastic constant at 20 ° C. K 33 (pN)
Specific resistance value: Specific resistance value at 25 ° C. (Ω · cm)
Voltage holding ratio: 60 Hz, 1 V voltage holding ratio at 60 ° C. (%)
Ion density: 0.05 Hz, ion density at 60 ° C. under 20 V application condition (pC / cm −3 )
Moreover, although the compound of Formula (Ib-3) was used as a representative example of the polymerizable compound used in the polymerizable compound-containing liquid crystal composition, the present invention is not limited to the polymerizable compound.
以下に実施例を挙げて本発明を更に詳述するが、本発明はこれらの実施例に限定されるものではない。
（実施例および比較例）
代表的な液晶組成物としてＬＣ−Ａを調製した。液晶組成物の構成とその物性値は表１のとおりであった。
EXAMPLES The present invention will be described in further detail with reference to examples below, but the present invention is not limited to these examples.
(Examples and Comparative Examples)
LC-A was prepared as a typical liquid crystal composition. The composition of the liquid crystal composition and its physical property values are shown in Table 1.
ＬＣ−Ａ ９９．５％に式（Ｉｂ−３）の重合性化合物０．５％添加した重合性化合物含有液晶組成物ＭＬＣ−１を調製した。 A polymerizable compound-containing liquid crystal composition MLC-1 in which 0.5% of the polymerizable compound of the formula (Ib-3) was added to 99.5% of LC-A was prepared.
鋼鉄製およびチタン製の容量１０Ｌの耐圧構造を有する容器をそれぞれ製造し、このＭＬＣ−１を容量１０Ｌの鋼鉄製容器（比較例１）及び容量１０Ｌのチタン製容器（実施例１）に充填・密閉した。室温でＭＬＣ−１を充填した各容器を保管し、１ヶ月後に開封し品質評価を行った。評価結果を表２に示す。 Steel and titanium containers each having a pressure-resistant structure with a capacity of 10 L are manufactured, and this MLC-1 is filled into a steel container with a capacity of 10 L (Comparative Example 1) and a titanium container with a capacity of 10 L (Example 1). Sealed. Each container filled with MLC-1 was stored at room temperature, opened one month later, and evaluated for quality. The evaluation results are shown in Table 2.
比較例１である鋼鉄製容器に充填したＭＬＣ−Ａは１ヵ月後と比抵抗値および電圧保持率の下落、ならびにイオン密度の増加が見られた。一方、実施例１であるチタン製容器に充填したＬＣ−Ａは比抵抗値、電圧保持率およびイオン密度に大きな変化は見られなかった。
以上のことから、本発明の容器は液晶材料の品質と強い相関のある比抵抗値、電圧保持率およびイオン密度などの指標を変化させない優れた容器であることが確認された。
MLC-A filled in a steel container as Comparative Example 1 showed a decrease in specific resistance value and voltage holding ratio and an increase in ion density after one month. On the other hand, LC-A filled in the titanium container of Example 1 showed no significant changes in the specific resistance value, voltage holding ratio, and ion density.
From the above, it was confirmed that the container of the present invention is an excellent container that does not change indicators such as specific resistance, voltage holding ratio, and ion density, which have a strong correlation with the quality of the liquid crystal material.
Claims (7)
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| WO2012114397A1 (en) * | 2011-02-24 | 2012-08-30 | パナソニック株式会社 | Outer covering and method for producing same |
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