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Liquid crystal oriented agent, liquid crystal oriented film and liquid crystal indicator element

A technology of liquid crystal aligning agent and liquid crystal aligning film, applied in the directions of liquid crystal materials, chemical instruments and methods, optics, etc., can solve the problems of coating and printability, and achieve excellent printability, high pretilt angle, and high voltage retention. Effect

Inactive Publication Date: 2009-08-05
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the liquid crystal aligning agent described in Patent Document 4 exhibits a high voltage retention rate and is excellent in the dependence of the pretilt angle on process conditions, it has problems in applicability, especially printability, and therefore need to improve

Method used

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  • Liquid crystal oriented agent, liquid crystal oriented film and liquid crystal indicator element
  • Liquid crystal oriented agent, liquid crystal oriented film and liquid crystal indicator element
  • Liquid crystal oriented agent, liquid crystal oriented film and liquid crystal indicator element

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0145] 196 g (1.0 mol) of 1,2,3,4-cyclobutanetetracarboxylic dianhydride as tetracarboxylic dianhydride, and 2,2'-dimethyl-4,4'- Diaminobiphenyl 212g (1.0 mole) is dissolved in the mixed solvent that is made up of 370g N-methyl-2-pyrrolidone and 3300g gamma-butyrolactone, makes it react at 40 ℃ for 3 hours, obtains about 3700g containing 10 weight % solution of polyamic acid (A-1). The solution viscosity of this solution was 160 mPa·s.

Synthetic example 2

[0147] 98 g (0.50 moles) of 1,2,3,4-cyclobutanetetracarboxylic dianhydride as tetracarboxylic dianhydride and 109 g (0.50 moles) of pyromellitic dianhydride, and 4 as diamine compound, 198g (1.0 mole) of 4'-diaminodiphenylmethane was dissolved in the mixed solvent that is made up of 230g N-methyl-2-pyrrolidone and 2060g gamma-butyrolactone, after making it react at 40 ℃ for 3 hours, 1350 g of (gamma)-butyrolactone was added, and about 3600 g of solutions containing 10 weight% of polyamic acids (A-2) were obtained. The solution viscosity of this solution was 125 mPa·s.

[0148]

Synthetic example 3

[0150] 112g (0.50 moles) of 2,3,5-tricarboxycyclopentylacetic dianhydride as tetracarboxylic dianhydride and 1,3,3a,4,5,9b-hexahydro-8-methyl-5- (Tetrahydro-2,5-dioxo-3-furyl)-naphthalene[1,2-c]-furan-1,3-dione 157g (0.50 mol), p-phenylenediamine as diamine compound 88g (0.81 mol), 25g (0.10 mol) of diaminopropyltetramethyldisiloxane and 4-(4'-trifluoromethoxyphenoxy) cyclohexyl ester of 3,5-diaminobenzoate ( 33 g (0.080 mol) of the compound represented by the above formula (d-1), and 1.4 g (0.015 mol) of aniline as a monoamine were dissolved in 1250 g of N-methyl-2-pyrrolidone and reacted at 60° C. hours, a solution containing polyamic acid was obtained. A small amount of this solution was taken, and N-methyl-2-pyrrolidone was added to prepare a solution with a polyamic acid concentration of 10% by weight. The measured solution viscosity was 50 mPa·s.

[0151] 2500 g of N-methyl-2-pyrrolidone was added to the obtained polyamic acid solution, and 397 g of pyridine and 410 g ...

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Abstract

The invention relates to a liquid crystal directing agent, a liquid crystal directing film and a liquid display element. The invention provides the liquid crystal directing agent with great printing performance, voltage maintaining rate with high display and liquid crystal directing film with stable angle made by the technique conditions. The liquid crystal directing agent contains: (A) reacting the tetracarboxylic acid dianhydride containing 1,2,3,4-cyclobutane dianhydride and the diamine reaction to obtain polyamide acid; and (B) reacting the 4-carboxylic acid anhydride and containing the above-mentioned type (d-1), said compounds represented by a specific single-substituted benzene diamine diamine reaction of the polyamic acid dehydration of the closed-loop polyimide; the quantity of the amic acid structure of the (A) polyamic acid relevant to the has the sum quantity of the imide structure quantity and the amic acid structure of the (B) polyimide; the quantity ratio of the actidione of the (B) polyimide is 10-50%.

Description

technical field [0001] The invention relates to a liquid crystal aligning agent, a liquid crystal aligning film and a liquid crystal display element. More specifically, it relates to a liquid crystal aligning agent which is excellent in printability and can produce a liquid crystal aligning film exhibiting a high voltage retention rate and a stable pretilt angle regardless of the adopted process conditions; a liquid crystal alignment agent exhibiting a high voltage retention rate and a high pretilt angle A liquid crystal alignment film; and a liquid crystal display element capable of obtaining high-quality display. Background technique [0002] At present, as a liquid crystal display element, a TN type liquid crystal display element having a so-called TN type (twisted nematic) liquid crystal cell is widely known, and a liquid crystal alignment film is formed on the surface of a substrate on which a transparent conductive film is provided as a substrate for a liquid crystal d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1337
CPCC09K19/56G02F1/1337
Inventor 黑田美彦林英治
Owner JSR CORPORATIOON
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