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Aqueous composition, optical film containing same, polarizing plate using same, and liquid crystal display device using same

An optical film and composition technology, applied in nonlinear optics, optics, polarizing elements, etc., can solve the problems of high draw ratio, poor adhesion strength, low surface roughness, etc., and achieve good solvent resistance, good adhesion, etc. The effect of adhesion and durability improvement

Active Publication Date: 2017-03-29
ANHUI HEMEI MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, unlike TAC substrates, due to the high draw ratio and low surface roughness of acrylic films, their surfaces can be relatively dense and coatings can be difficult to penetrate
In addition, the adhesion strength of the acrylic film to the alignment layer as well as to the liquid crystal layer may be poor
In addition, since the acrylic film has poor solvent resistance, the acrylic film may be damaged by the organic solvent contained in the alignment composition
Therefore, orientation performance may not be good

Method used

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  • Aqueous composition, optical film containing same, polarizing plate using same, and liquid crystal display device using same
  • Aqueous composition, optical film containing same, polarizing plate using same, and liquid crystal display device using same
  • Aqueous composition, optical film containing same, polarizing plate using same, and liquid crystal display device using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] 50 g of polyurethane resin emulsion (CK-PUD-F, Chokwang-polyurethane dispersion, emulsion containing 10% solid content) and 111 g of aqueous polyvinyl alcohol solution (Nippon Synthetic Chemicals, Z200, aqueous solution containing 4.5% solid content) and 0.5 g of colloidal silica (Ranco Co., an aqueous solution containing 20% ​​solid content) were mixed to prepare a water-based primer composition in which the solid content ratio of polyurethane resin and polyvinyl alcohol was 1:1. The aqueous primer composition was then coated with a #9 rod to a thickness of 1,000 nm on a corona treated acrylic film (LG Chem, GP-Film). After coating, a drying step was performed at 100° C. for 5 minutes to obtain an acrylic film including a primer layer formed thereon.

[0110] Then, 2 parts by weight of 5-norbornene-2-methyl-(4-methoxycinnamate) as a photoreactive polymer, 2 parts by weight of dipentaerythritol hexaacrylate as a polyfunctional monomer and 0.5 parts by weight of IRGACUR...

Embodiment 2

[0114] The same procedure as described in Example 1 was followed to make an optical film, except that the aqueous primer composition was coated to a thickness of 500 nm with a #5 rod.

Embodiment 3

[0116] The same procedure as described in Example 1 was followed to make an optical film, except that the aqueous primer composition was coated to a thickness of 200 nm with a #3 rod.

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Abstract

The present invention relates to an aqueous primer composition 100 parts by weight of a urethane resin, 1 to 100 parts by weight of polyvinyl alcohol, 0.1 to 10 parts by weight of water dispersible particles, and a remainder of water, an optical film including the same, a polarizing plate using the same and a liquid crystal display device using the same.

Description

technical field [0001] The present invention relates to a kind of water-based primer composition, the optical film that comprises this water-based primer composition, the polarizer that uses this optical film and the liquid crystal display device that uses this polarizer, and more particularly, the present invention relates to a kind of Acryl film (acryl film) has good adhesion and does not inhibit the optical performance and durability of the optical film when used in the aqueous primer composition, optical film comprising the aqueous primer composition, using the optical film A polarizing plate of a film and a liquid crystal display device using the polarizing plate. Background technique [0002] A liquid crystal display (LCD) is a display device that illuminates pixels using the principle of selectively transmitting light according to changes in optical functions according to the orientation of liquid crystals disposed between polarizing plates. When the polarizing plate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/30C09D175/04C09D7/12G02F1/13
CPCC08K3/22C08K3/36C09D7/61C09D7/65C09D7/68C09D129/04C09D175/04G02B5/30G02F1/13
Inventor 沈花燮柳秀英李南贞
Owner ANHUI HEMEI MATERIALS TECH CO LTD