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Compound, liquid crystal composition and liquid crystal display element

A compound and liquid crystal technology, applied in the direction of liquid crystal materials, organic chemistry, chemical instruments and methods, etc., can solve problems such as increased power consumption

Active Publication Date: 2019-12-06
NISSAN CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the standard type element needs to constantly apply voltage to obtain a transmissive state, so when it is used in applications that are mostly used in a transparent state, such as window glass applications, power consumption increases

Method used

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  • Compound, liquid crystal composition and liquid crystal display element
  • Compound, liquid crystal composition and liquid crystal display element
  • Compound, liquid crystal composition and liquid crystal display element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0278] The following examples are given to describe the present invention more specifically, but are not limited to these examples. Abbreviations used hereinafter are as follows.

[0279] "Compounds Used in Liquid Crystal Compositions"

[0280]

[0281]

[0282]

[0283]

[0284]

[0285] L1: MLC-6608 (manufactured by Merck & Co., Ltd.)

[0286]

[0287]

[0288] R3: BLEMMER TA-604AU (manufactured by NOF Corporation)

[0289]

[0290]

[0291] "Compounds used in liquid crystal aligning agents"

[0292]

[0293]

[0294]

[0295]

[0296]

[0297]

[0298]

[0299]

[0300]

[0301]

[0302]

[0303]

[0304] E2: Octadecyltriethoxysilane

[0305] E3: 3-methacryloxypropyltrimethoxysilane

[0306] E4: 3-Ureapropyltriethoxysilane

[0307] E5: Tetraethoxysilane

[0308]

[0309]

[0310]

[0311]

[0312]

[0313]

[0314]

[0315] NMP: N-methyl-2-pyrrolidone

[0316] γ-BL: γ-butyrolactone

[0317] BCS: Et...

Embodiment 2

[0413] Specific Compounds: Synthesis of T2

[0414]

[0415] At 25°C, compound (3) (5.01g, 17.9mmol), dibutylhydroxytoluene (0.010g, 0.046mmol), diazabicycloundecene (0.27g, 1.79mmol) and toluene (50g ), compound (2) (same as above) (4.69 g, 19.6 mmol) was added, and stirred at 110° C. for 48 hours. After completion of the reaction, dilute hydrochloric acid aqueous solution was added, and extraction and liquid separation were performed with chloroform. The chloroform layer was washed three times with dilute aqueous hydrochloric acid and twice with water, and dried by adding anhydrous magnesium sulfate. Thereafter, the solvent of the chloroform layer was distilled off under reduced pressure, and methanol (30 g) was added to the obtained residue. The precipitated solid was taken out by filtration and dried to obtain pale yellowish white crystals (T2) (yield: 4.69 g, yield: 50.5%).

[0416] 1H-NMR (CDCl 3 , σppm): 6.39-6.47 (m, 2H), 6.09-6.18 (m, 2H), 5.85-5.91 (m, 2H), 4....

Embodiment 3

[0418] Specific Compounds: Synthesis of T3

[0419]

[0420] At 25°C, in compound (4) (10.0g, 30.4mmol), dibutylhydroxytoluene (0.02g, 0.091mmol), diazabicycloundecene (0.46g, 3.04mmol) and toluene (100g ), compound (2) (same as above) (9.47 g, 39.6 mmol) was added, and stirred at 110° C. for 72 hours. After completion of the reaction, dilute hydrochloric acid aqueous solution was added, and extraction and liquid separation were performed with chloroform. The chloroform layer was washed three times with dilute aqueous hydrochloric acid and twice with water, and dried by adding anhydrous magnesium sulfate. Thereafter, the solvent of the chloroform layer was distilled off under reduced pressure, and isopropanol (150 g) was added to the obtained residue. Then, it heated to 40 degreeC and filtered. The obtained filtrate was distilled off under reduced pressure, methanol (150 g) was added to the residue, and the precipitated solid was collected by filtration. The obtained so...

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Abstract

The purpose of the present invention is achieved by using a compound represented by formula [1a] in a liquid crystal composition for a liquid crystal display element. The definitions of symbols in theformula are as described in the specification.

Description

technical field [0001] The present invention relates to a novel compound, a liquid crystal composition containing the compound, and a transmission-scattering liquid crystal display element obtained by using the liquid crystal composition. Background technique [0002] TN (Twisted Nematic) mode liquid crystal alignment elements have been put into practical use. In this mode, it is necessary to use a polarizer in order to switch light using the optical rotation characteristics of the liquid crystal. If a polarizing plate is used, the utilization efficiency of light decreases. As a liquid crystal display element that does not use a polarizing plate, it is known to use a polymer dispersed liquid crystal (also called PDLC (Polymer Dispersed Liquid Crystal) to switch between a transmissive state (also called a transparent state) and a scattered state of the liquid crystal. ) or polymer network liquid crystal (also known as PNLC (Polymer Network Liquid Crystal)) components. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/10C08G73/10C07C271/16C07C271/34C07C271/48C09K19/38C09K19/54G02F1/13G02F1/1337
CPCC07C271/16C07C271/34C07C271/48C08F220/10C08G73/10C09K19/38C09K19/54G02F1/13G02F1/1337C07C271/22C07C271/54C09K19/56
Inventor 保坂和义北浩三木德俊
Owner NISSAN CHEM IND LTD
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