Composition for forming cured film, alignment material, and phase difference material

一种固化膜、组合物的技术，应用在液晶材料、化学仪器和方法、光学等方向，能够解决难以提高对比率和亮度、响应速度、亮度变化/色彩变化少、低对比率等问题，达到优异垂直取向性的效果

Active Publication Date: 2020-06-05
NISSAN CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] IPS-LCD is characterized in that since there is no inclination in the vertical direction of the liquid crystal molecules, there is little brightness change / color change due to the viewing angle; however, as disadvantages, it is difficult to improve the contrast ratio, brightness, and response speed
For example, as disclosed in Patent Document 1, for the IPS-LCD at the initial stage of proposal, the compensation film for the viewing angle is not used, and for such an IPS-LCD without the compensation film for the viewing angle, due to the dark state Relatively large light leakage in , and thus have the disadvantage of exhibiting low contrast ratio values

Method used

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  • Composition for forming cured film, alignment material, and phase difference material
  • Composition for forming cured film, alignment material, and phase difference material
  • Composition for forming cured film, alignment material, and phase difference material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0303]

[0304] The cured film forming composition of this invention contains the polymer of (A) component, the crosslinking agent of (B) component, and the adhesion accelerator of (C) component, and / or (D) the heat-crosslinkable group Agglomerated polymers may contain a crosslinking catalyst as component (E) if desired, and may contain other additives as long as the effect of the present invention is not impaired. And usually, these are used in the form of the solution which melt|dissolved in the solvent.

[0305] Preferred examples of the cured film-forming composition of the present invention are as follows.

[0306] [1]: A cured film forming composition comprising (A) component, 1 to 300 parts by mass of (B) component based on 100 parts by mass of (A) component, and The total amount of 100 parts by mass of the polymer and the crosslinking agent as component (B) is at least one of component (C) of 0.1 to 100 parts by mass and component (D) of 1 to 400 parts by mass .

...

Embodiment

[0323] The following examples are given to illustrate the present invention in more detail, but the present invention is not limited to these examples.

[0324] [Abbreviated symbols used in Examples]

[0325] The meanings of the abbreviations used in the following examples are as follows.

[0326]

[0327] LAA: lauryl acrylate

[0328] PAA: palmityl acrylate

[0329] LAMA: lauryl methacrylate

[0330] HEMA: 2-Hydroxyethyl methacrylate

[0331] MMA: methyl methacrylate

[0332] BzMA: benzyl methacrylate

[0333] BMAA: N-Butoxymethacrylamide

[0334] GMA: glycidyl methacrylate

[0335] AIBN: α,α'-azobisisobutyronitrile

[0336] A1: 2-(((4-(4'-pentyl-[1,1'-bis(cyclohexane)]-4-yl)phenoxy)carbonylamino)ethyl methacrylate

[0337]

[0338] A2: 6-(4-(4-heptylcyclohexyl)phenoxy)hexyl methacrylate

[0339]

[0340]

[0341] HMM: Melamine crosslinking agent represented by the following structural formula [Cymel (CYMEL) (registered trademark) 303 (manufactured by Mits...

Synthetic example 1

[0383] Synthesis of Compound [DM-1]

[0384]

[0385] Under nitrogen flow, at room temperature, 500 g of ethyl acetate, 35.5 g (0.300 mol) of 1,6-hexanediol, 1,8-diazabicyclo[5.4.0]- 1.80 g (11.8 mmol) of 7-undecene (DBU) and 0.45 g (2.04 mmol) of 2,6-di-tert-butyl-p-cresol (BHT) were stirred by a magnetic stirrer, and the temperature was raised to 55°C. Add 95.9 g (0.679 mol) of ethyl acrylate 2-isocyanate dropwise to the reaction solution, stir for 2 hours, then use high performance liquid chromatography to analyze the reaction solution, and the area percentage of the intermediate is less than 1% end the reaction. After adding 328 g of hexane and cooling to room temperature, the precipitated solid was washed twice with 229 g of hexane and dried to obtain compound [A-a] (104 g, 0.260 mol, yield: 86.7%).

[0386]

[0387] Under nitrogen flow, put 1330g of dichloromethane, 100g (0.250mol) of compound [A-a], and 22.5g (0.749mol) of paraformaldehyde in a 2L four-necked b...

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Abstract

The invention aims to provide a composition for forming a cured film, which is used for providing an alignment material which is excellent in terms of vertically aligning property and tight adhesion and which can vertically align polymerizable liquid crystals with high sensitivity even on a resin film; and a phase difference using such alignment material. A composition for cured-film formation characterized by comprising (A) a polymer having a vertically aligning group and a heat-crosslinkable functional group, (B) a crosslinking agent, and (C) an adhesion promoter and / or (D) a polymer havinga heat-crosslinkable group; an alignment material characterized by being obtained using the composition; and a phase difference material characterized by being obtained using the composition.

Description

[0001] This application is a divisional application of a patent application with an application date of August 27, 2015, an application number of 201580046083.0, and an invention title of "cured film forming composition, orientation material, and phase difference material". technical field [0002] The present invention relates to a composition for forming a cured film of a vertical alignment material suitable for vertical alignment of liquid crystal molecules. In particular, the present invention relates to improving a liquid crystal display (LCD), specifically an IPS liquid crystal display (In- (planeSwitching LCD; in-plane orientation switching LCD) is used for viewing angle characteristics and is useful for producing a +C plate (positive C plate), a cured film forming composition, an orientation material, and a retardation material. Background technique [0003] The characteristic of IPS-LCD is that since there is no inclination in the vertical direction of the liquid cr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1337G02F1/13363G02B5/30C09D201/00C09D133/14C09D7/40
CPCC09D133/14C09D201/00G02F1/13363G02F1/1337G02B5/30C09D7/40C09D201/02C09K19/56
Inventor 伊藤润畑中真大村浩之汤川升志郎菅野裕太
Owner NISSAN CHEM CORP
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