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Polymerizable liquid crystal compound, polymerizable liquid crystal composition and oriented film

A technology of liquid crystal composition and polymerizable liquid crystal, which is applied in the direction of liquid crystal materials, organic chemistry, chemical instruments and methods, etc., can solve the problems of high wavelength dependence of optical anisotropy, and achieve chemical resistance and optical anisotropy High, anisotropic and stable effects of transparency

Active Publication Date: 2014-08-27
NISSAN CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Furthermore, when compared with optically anisotropic films obtained by other processes (such as stretching of polyvinyl alcohol-based films), films obtained from polymerizable liquid crystal compounds have the problem of high wavelength dependence of optical anisotropy

Method used

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  • Polymerizable liquid crystal compound, polymerizable liquid crystal composition and oriented film
  • Polymerizable liquid crystal compound, polymerizable liquid crystal composition and oriented film
  • Polymerizable liquid crystal compound, polymerizable liquid crystal composition and oriented film

Examples

Experimental program
Comparison scheme
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preparation example Construction

[0150] The method for preparing the polymerizable liquid crystal composition of the present invention is not particularly limited, and the components constituting the polymerizable liquid crystal composition may be mixed at one time or sequentially. When mixing sequentially, the addition order of each component is arbitrary.

[0151] In addition, when a plurality of compounds are used as one component, a mixture obtained by mixing these compounds in advance may be mixed with other components, or may be mixed with other components separately.

[0152] The polymerizable liquid crystal composition of the present invention should avoid causing unnecessary thermal polymerization when photopolymerizing in a liquid crystal state when producing an optically anisotropic body. In order to make the uniform orientation state of molecules easier, preferably at room temperature (20 ~40°C, hereinafter the same) shows a stable liquid crystal phase. In addition, when the polymerizable liquid ...

Embodiment

[0170] Hereinafter, the present invention will be described more specifically with reference to synthesis examples, examples, and comparative examples, but the present invention is not limited to the following examples. In addition, the measurement method and measurement conditions of each physical property in an Example are as follows.

[0171] [1] NMR

[0172] The compound was dissolved in deuterated chloroform (CDCl 3 ) or deuterated dimethyl sulfoxide (DMSO-d6), using a nuclear magnetic resonance device (manufactured by diol) to measure the 300MHz 1 H-NMR.

[0173] [2] Observation of liquid crystal phase

[0174] For the identification of the liquid crystal phase, the sample was heated on a hot stage (Hotstage) (MATS-2002S, manufactured by Tokai Hit Co., Ltd.), and observed using a polarizing microscope (manufactured by Nikon Corporation). For the phase transition temperature, a differential scanning thermal analyzer (DSC3100SR) (hereinafter referred to as DSC) manufac...

Synthetic example 1

[0180] [Synthesis Example 1] Synthesis of Polymerizable Liquid Crystal Compound (E1)

[0181] [chem 32]

[0182]

[0183] Add 9.8g (50.0mmol) of 4-cyano-4'-hydroxybisphenol, 7.0g (50.0mmol) of 3-bromo-1-propanol, and 13.8g (100mmol) of potassium carbonate into a 500ml eggplant-shaped flask with a condenser. ), and acetone 150ml to prepare a mixture, and reacted for 48 hours while stirring at 64°C. After the reaction was completed, the solvent was distilled off under reduced pressure to obtain a yellow wet solid. Then, this solid was mixed with 140 ml of water, and 100 ml of diethyl ether was added thereto for extraction. Extraction was performed 3 times. The separated organic layer was dried by adding anhydrous magnesium sulfate, filtered, and the solvent was distilled off under reduced pressure to obtain a yellow solid. This solid was purified by recrystallization using a mixed solvent of hexane / ethyl acetate=2 / 1 to obtain 8.7 g of a white solid. The results of measuri...

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Abstract

Polymerizable liquid crystal compounds represented by formula (i) and polymerizable liquid crystal compositions that contain the polymerizable compounds can provide optically anisotropic films that have excellent optical anisotropy, that stably maintain retardation values and transparency even at high temperatures, and that additionally have excellent retardation value frequency dispersion characteristics. (In the formula, n represents an integer of 3-10, and m an integer of 4-8.)

Description

technical field [0001] The present invention relates to a polymerizable liquid crystal compound having polymerizability and liquid crystallinity, a composition containing the same, and a polymer obtained by using the composition. Materials for liquid crystal displays, especially polymerizable liquid crystal compounds for optical compensation films such as polarizers and retardation plates for liquid crystal displays, compositions containing them, and polymers obtained using these compounds. Background technique [0002] In view of the improvement of display quality and weight reduction of liquid crystal display devices, the demand for polymer films whose internal molecular orientation structure is controlled is increasing as optical compensation films such as polarizing plates and retardation plates. In order to meet this demand, films utilizing the optical anisotropy possessed by polymerizable liquid crystal compounds are being developed. [0003] The polymerizable liquid ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D307/58C08F24/00C09K19/38G02B5/30
CPCC07D307/58G02B5/3016C08F32/04C09K19/3405C09K2019/0448C08F24/00
Inventor D·A·樱叶汀
Owner NISSAN CHEM IND LTD
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