Low-wavelength dispersibility polymerizability compound, composition of compound and application of compound

A technology of polymeric compounds and polymeric compositions, applied in the preparation of organic compounds, chemical instruments and methods, organic chemistry, etc., can solve the problem of lower birefringence of liquid crystal mixtures, impracticality, increased thickness of polymer films, etc. question

Active Publication Date: 2014-12-10
ANQING FEIKAI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It has been found that two rod-like groups with low polarizability will lead to lower n e , and the highly polarizable bridge part will lead to higher n o , resulting in a birefringence of the final liquid crystal mixture (Δn=n e -n o ) is significantly reduced, which leads to a significant increase in the thickness of the polymer film when the desired optical effect is achieved, which increases the amount of polymerizable liquid crystal mixture used, significantly increases the cost, and is not practical

Method used

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  • Low-wavelength dispersibility polymerizability compound, composition of compound and application of compound
  • Low-wavelength dispersibility polymerizability compound, composition of compound and application of compound
  • Low-wavelength dispersibility polymerizability compound, composition of compound and application of compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Example 1: Polymeric compound

[0074] The synthetic route for preparing compound (Ia-1-1) is shown below:

[0075]

[0076] Its specific process steps are as follows :

[0077] 1) Synthesis of the compound of formula 1.1

[0078] Add 62g of 4-iodobenzoic acid, 20g of 2,3-dicyanohydroquinone, a catalytic amount of DMAP (4-dimethylaminopyridine) and 400ml of DCM (dichloromethane) into a 1000ml three-necked flask. Add 60 g of DCC (1,3-dicyclohexylcarbodiimide) dropwise to the above solution at room temperature, and keep the reaction at room temperature for 5 hours. Filtration, washing, drying, rotary evaporation to remove the solvent, and column chromatography yielded 45 g of the product, which was a compound of formula (1.1).

[0079] 2) Synthesis of compounds of formula (1.2)

[0080] The synthesis method of the compound of formula (1.2) has been described in WO2010020312.

[0081] 3) Synthetic compound of formula (1)

[0082] Add the compound of form...

Embodiment 2

[0098] Example 2: Polymerizable composition and optically anisotropic body

[0099] The structure of the commercially available polymeric liquid crystal compound RM257 (Merck KgaA, Darmstadt, Germany) is shown in the figure below, and the Δn of the compound 450 / Δn 546 About 1.115.

[0100]

[0101] A polymeric composition PL-1 was prepared, wherein RM257 accounted for 50% by weight, and the compound (Ia-1-1) of Example 1 accounted for 50% by weight. A homogeneous polymerizable composition PL-1 was obtained after weighing, heating, melting and stirring.

[0102] On a glass substrate with a rubbed polyimide layer, the polymeric composition PL-1 was spin-coated at 1500 rpm. The coated glass substrate was placed on a hot plate at 60° C. for 10 minutes to achieve uniform horizontal alignment of the polymerizable composition. Then irradiate with ultraviolet light with a wavelength of 365nm, and the light intensity is 20mW / cm 2 , the irradiation time was 1 minute, and an o...

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Abstract

The invention provides a polymerizability compound with a general formula I, a polymerizability composition containing the compound and application of the compound in an optical anisotropy body. M1 and M2 show polymerizability liquid crystal groups with low polarization capability. The polymerizability compound can provide big birefringence while providing low-wavelength dispersibility, accordingly, anticipant optical effects can be achieved by using fewer materials, and enough application prospects are provided.

Description

technical field [0001] The present invention relates to a polymeric compound with low wavelength dispersion and its composition and application. Background technique [0002] Wavelength dispersion is the different effects of the medium on light of different wavelengths. The higher the wavelength dispersion, the greater the difference between the light of different wavelengths after passing through the medium. Optical compensation must be used to make up for this difference. Therefore, in some applications that require no chromatic aberration, low wavelength dispersion is necessary. [0003] In some applications using the principle of birefringence, wavelength dispersion is usually defined as the wavelength dispersion of birefringence, or the wavelength dispersion of optical retardation. A common expression is to measure the optical retardation (Re) or birefringence (Δn) at 450nm and 546nm respectively, and then divide the two to get the wavelength dispersion Re 450 / Re 54...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C255/55C07C253/30C08F20/36C09K19/38
Inventor 宋晓龙王盼盼
Owner ANQING FEIKAI NEW MATERIAL CO LTD
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