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Liquid crystal aligning agent and various applications thereof, polymer and method for producing polymer

A technology of liquid crystal aligning agent and liquid crystal aligning film, which is applied in the directions of liquid crystal materials, chemical instruments and methods, instruments, etc., can solve the problems of insufficient thermal stability and insufficient contrast of the photosensitive polymer layer, and achieve the effect of wide viewing angle.

Active Publication Date: 2014-10-15
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thermal stability of the photosensitive polymer layer obtained by this technique is insufficient, and the contrast of the boundary between adjacent regions with different polarization states is insufficient.

Method used

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  • Liquid crystal aligning agent and various applications thereof, polymer and method for producing polymer
  • Liquid crystal aligning agent and various applications thereof, polymer and method for producing polymer
  • Liquid crystal aligning agent and various applications thereof, polymer and method for producing polymer

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example DC-1

[0219] (1) Synthesis of 4-acryloyloxybenzoic acid

[0220] Add 13.8g (100mmol) of 4-hydroxybenzoic acid, 8g (200mmol) of sodium hydroxide and 400mL of pure water into a 1L three-necked flask with a dropping funnel, and cool in an ice bath. There, 120 mL of methylene chloride solutions containing 10.86 g (120 mmol) of acryloyl chloride were dropped from the dropping funnel over 1.5 hours. After completion of the dropwise addition, the mixture was stirred under an ice bath for 2 hours, and then the temperature of the reaction mixture was returned to room temperature, followed by stirring for 3 hours to perform a reaction. Next, after ice-bathing the reaction mixture again, 1 N of hydrochloric acid was added dropwise to make the reaction mixture acidic. The precipitated solid was collected using a suction funnel, and recrystallized from ethanol to obtain 16 g of 4-acryloyloxybenzoic acid.

[0221] (2) Synthesis of compound (DC-1)

[0222] This synthesis was carried out under a...

Synthetic example DC-2

[0225] (1) Synthesis of bis(4-acryloyloxyphenyl)methane

[0226] 10 g of 4-hydroxydiphenylmethane, 11 g of triethylamine, and 60 mL of tetrahydrofuran were added to a 200 mL three-neck flask equipped with a dropping funnel to form a solution. After cooling this solution with ice, 50 mL of a tetrahydrofuran solution containing 10 g of acryloyl chloride was added dropwise thereto from a dropping funnel. After completion of the dropwise addition, the reaction mixture was stirred under an ice bath for 3 hours to carry out a reaction, and then the reaction mixture was liquid-separated and washed with a mixed solvent of ethyl acetate and water. The organic layer was recovered, dried with magnesium sulfate, and the organic solvent was distilled off to obtain 15 g of bis(4-acryloyloxyphenyl)methane

[0227] (2) Synthesis of compound (DC-2)

[0228] This synthesis was carried out under an inert atmosphere.

[0229] 8 g of bis(4-acryloyloxyphenyl) methane obtained above, 10.5 g of 4-...

Synthetic example DC-3

[0231] (1) Synthesis of 1,4-diacryloyloxybenzene

[0232] 10 g of hydroquinone, 20 g of triethylamine and 100 mL of tetrahydrofuran were added to a 300 mL three-necked flask with a dropping funnel to form a solution. After cooling this solution with ice, 90 mL of a tetrahydrofuran solution containing 19 g of acryloyl chloride was added dropwise thereto. After the reaction was carried out by stirring for an additional 3 hours under an ice bath, the resulting reaction mixture was washed with a mixed solvent of ethyl acetate and water. After recovering the organic layer and drying it with magnesium sulfate, the organic solvent was distilled off to obtain 16 g of 1,4-diacryloyloxybenzene.

[0233] (2) Synthesis of compound (DC-3)

[0234] This synthesis was carried out under an inert atmosphere.

[0235] 8 g of 1,4-diacryloyloxybenzene obtained above, 15 g of 4-bromobenzoic acid, 165 mg of palladium acetate, 0.9 g of tris(o-tolyl)phosphine, 30 g of triethylamine and 130 mL of d...

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Abstract

The invention relates to a liquid crystal orientation agent and various applications thereof, a polymer and a producing method thereof. Liquid crystal orientation film with wide vision, good quality, good afterimage and burning-in is provided. Liquid crystal orientation agents capable of forming liquid crystal orientation film through light orientation method are provided. The liquid crystal orientation agent is used for producing phase difference films which has good contrast among boundaries of adjacent areas under different polarization states and has a stable polarization state. The liquid crystal orientation agent comprises polymer expressed in the following formula (1), wherein R is respectively alkyl with 1-4 carbon atoms, hydroxyl, halogen atom or cyan; a is respectively an integer from 0 to 4; * represents a connecting key.

Description

technical field [0001] The present invention relates to a liquid crystal aligning agent, a liquid crystal aligning film, a liquid crystal display element, a method for forming a retardation film, a retardation film, a liquid crystal display element, a polymer, and a method for producing the polymer. More specifically, it is related with the liquid crystal aligning agent used suitably when forming the liquid crystal aligning film used for a transverse electric field type liquid crystal display element or a retardation film by the photo-alignment method especially. Background technique [0002] In a liquid crystal display element, in order to align liquid crystal molecules in a predetermined direction with respect to a substrate surface, a liquid crystal aligning film is provided on the substrate surface. The liquid crystal alignment film is usually formed by polishing the surface of the organic film formed on the surface of the substrate in a certain direction (polishing meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/56C08G59/22C08G59/42G02F1/1337
CPCC08J5/18C08L63/00C08L67/03C08L2203/16C09K19/56G02F1/1337
Inventor 安田博幸永尾隆
Owner JSR CORPORATIOON
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