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Composition for forming cured film, orientation material, and retardation material

A curing film and composition technology, applied in liquid crystal materials, chemical instruments and methods, instruments, etc., can solve problems such as difficulty in improving contrast ratio and brightness, response speed, less brightness change/color change, low contrast ratio, etc., to achieve The effect of excellent vertical alignment

Active Publication Date: 2020-04-17
NISSAN CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] 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, orientation material, and retardation material
  • Composition for forming cured film, orientation material, and retardation material
  • Composition for forming cured film, orientation material, and retardation material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0302]

[0303] 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.

[0304] Preferred examples of the cured film-forming composition of the present invention are as follows.

[0305] [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

[0322] The following examples are given to illustrate the present invention in more detail, but the present invention is not limited to these examples.

[0323] [Abbreviated symbols used in Examples]

[0324] The meanings of the abbreviations used in the following examples are as follows.

[0325]

[0326] LAA: lauryl acrylate

[0327] PAA: palmityl acrylate

[0328] LAMA: lauryl methacrylate

[0329] HEMA: 2-Hydroxyethyl methacrylate

[0330] MMA: methyl methacrylate

[0331] BzMA: benzyl methacrylate

[0332] BMAA: N-Butoxymethacrylamide

[0333] GMA: glycidyl methacrylate

[0334] AIBN: α,α'-azobisisobutyronitrile

[0335] A1: 2-(((4-(4'-pentyl-[1,1'-bis(cyclohexane)]-4-yl)phenoxy)carbonylamino)ethyl methacrylate

[0336]

[0337] A2: 6-(4-(4-heptylcyclohexyl)phenoxy)hexyl methacrylate

[0338]

[0339]

[0340] HMM: Melamine crosslinking agent represented by the following structural formula [Cymel (CYMEL) (registered trademark) 303 (manufactured by Mits...

Synthetic example 1

[0382] Synthesis of compound [DM-1]

[0383]

[0384] 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%).

[0385]

[0386] 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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PUM

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Abstract

The object of the present invention is to provide a cured film-forming composition for providing a cured film-forming composition that has excellent vertical orientation and adhesion, and can polymerize with high sensitivity even on a resin film. An alignment material for vertically aligning liquid crystals, and a retardation material using such an alignment material. The solution is: a cured film forming composition characterized by containing (A) a polymer having a vertical alignment group and a thermally crosslinkable functional group, (B) a crosslinking agent, and (C) an adhesive Any one or both of accelerators and (D) polymers having thermally crosslinkable groups; the orientation material is characterized in that it is obtained using the composition; the retardation material is characterized in that it is obtained by using The composition obtained.

Description

technical field [0001] 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 [0002] The characteristic of IPS-LCD is 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; 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D201/00C09D7/63C09D133/14G02B5/30G02F1/13363G02F1/1337
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 IND LTD
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