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Polymerizable liquid crystal compound, and liquid crystal composition and optically anisotropic body comprising same

一种光学各向异性、聚合液晶的技术，应用在光学、有机化学、液晶材料等方向，能够解决取向问题、限制等问题，达到高双折射率、薄光学性质、优秀涂布取向的效果

Active Publication Date: 2015-02-25
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, many studies for obtaining the high-birefringence liquid crystal compound have been actively conducted, however, due to the orientation problem of the film when the existing liquid crystal compound is coated on the film, it is not applied to industrial practice. There are restrictions

Method used

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  • Polymerizable liquid crystal compound, and liquid crystal composition and optically anisotropic body comprising same
  • Polymerizable liquid crystal compound, and liquid crystal composition and optically anisotropic body comprising same
  • Polymerizable liquid crystal compound, and liquid crystal composition and optically anisotropic body comprising same

Examples

Experimental program
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Effect test

Embodiment 1

[0068] Embodiment 1: the synthesis of compound 3-a

[0069] In Scheme 1, about 8 g of 2-methylbenzene-1,4-diamine (compound 1-a) [Journal of Chemical Research, 2005, 2, 123] was dissolved in about 80 ml of ethanol, and the solution was heated to about 90 ℃. A solution of about 40 g of 6-hydroxy-2-naphthaldehyde (Compound 2) dissolved in about 150 ml of ethanol was added dropwise thereto, and the mixture was stirred and refluxed for about 8 hours. The reacted mixture was cooled to room temperature and a solid product was obtained. About 24 g of compound 3-a (R 1 = methyl).

Embodiment 2

[0070] Embodiment 2: the synthesis of compound 3-b

[0071] Except using 2-ethylbenzene-1,4-diamine (compound 1-b) instead of compound 1-a, about 31 g of compound 3-b (R 1 = ethyl).

Embodiment 3

[0072] Embodiment 3: the synthesis of compound 4-a

[0073] After dissolving about 10 g of compound 3-a according to Example 1, about 6.6 g of chloropropanol, and about 13 g of potassium carbonate in acetone, the solution was stirred and refluxed for about 24 hours. After cooling the reaction mixture to room temperature, the product was filtered to remove solids and distilled under reduced pressure. Then, about 11.5 g of compound 4-a (R 1 =methyl, n=3).

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Abstract

The present invention relates to a polymerizable liquid crystal compound, a liquid crystal composition comprising the same, and an optically anisotropic body comprising the same. The polymerizable liquid crystal compound according to the present invention has high double refraction ratio, exhibits excellent orientation properties in coating and is able to manufacture an optically anisotropic body with excellent optical properties while having a thin thickness. [Reference numerals] (AA,CC) Compounds; (BB,DD) Light-leak rate

Description

technical field [0001] The present invention relates to a polymerizable liquid crystal compound, a liquid crystal composition comprising the compound, and an optically anisotropic body. Background technique [0002] A phase retarder is an optical element that changes the polarization state of light passing through the phase retarder, and is equivalent to the wave plate described above. When light passes through the electromagnetic phase retarder, the polarization direction (the direction of the electric field vector) becomes the sum of the two parts (ordinary rays and extraordinary rays) parallel or perpendicular to the optical axis, and because the vector sum of the two parts according to The birefringence and thickness of the phase retarder change, and the polarization direction changes after passing through the phase retarder. [0003] Recently, a big problem in preparing an optical film for use in the phase retarder is to prepare a high-performance film at a small cost....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/32G02B5/30
CPCC07C251/24C08F222/1025C09K19/22C09K19/322G02F1/1333C09K2019/0448C08F22/20
Inventor 徐庆昌全成浩崔大胜洪美罗张炯玭
Owner LG CHEM LTD