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A hard coating composition and hardened film containing the hard coating composition

A composition and hard coating technology, applied in the directions of coatings, layered products, chemical instruments and methods, etc., can solve the problem of poor adhesion between the hard coating and the surface of the substrate, unsatisfactory adhesion of the hard coating composition, electrical Halo bottom layer or glue bottom layer failure and other problems, to achieve the effect of improving adhesion, reducing internal stress, and good spreading

Active Publication Date: 2011-12-07
CHINA LUCKY FILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But because the surface of PET substrate is inert, the adhesion of general hard coat composition to its surface is not ideal, so people need to treat the surface of PET substrate with surface corona, coating adhesive primer, etc., to improve the hard coating. Adhesion of the layer composition on it
Although these measures can solve the problem of poor adhesion, they also increase the cost of the product, and, with the prolongation of product storage time, the corona primer or glue primer on the surface of the substrate is prone to failure, resulting in hard coating Poor re-adhesion of layer to substrate surface

Method used

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  • A hard coating composition and hardened film containing the hard coating composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 21 parts of dipentaerythritol hexaacrylate,

[0047] 9 parts of hydroxyethyl acrylate,

[0048] 3 parts of photoinitiator Irgacure 1173,

[0049] 50 parts of methyl ethyl ketone,

[0050] 20 parts of isopropanol,

[0051] BYK-3500 0.1 copies,

[0052] To 21 parts of dipentaerythritol hexaacrylate resin (manufactured by Nippon Kayaku Co., Ltd.), add 9 parts of hydroxyethyl acrylate monomer (manufactured by Tianjin Tianjiao Chemical Co., Ltd.) and 3 parts of photoinitiator Irgacure 1173 (manufactured by Nanjing Ji'an Chemical Co., Ltd.) ). Dilute the resulting mixture with a mixed solvent of 50 parts of methyl ethyl ketone and 20 parts of isopropanol, and then add 0.1 parts by weight of the organic silicon wetting aid BYK-3500 (manufactured by BYK Chemicals), stir well to obtain a hard coating composition Things.

[0053] The obtained hard coating composition was coated with a wire rod on one side of a base film with a thickness of 175 microns of polyethylene terephthalate film (m...

Embodiment 2

[0055] 16 parts of pentaerythritol triacrylate,

[0056] 48 parts of dipentaerythritol hexaacrylate,

[0057] 16 parts of 2-phenoxyethyl acrylate,

[0058] 10 parts of photoinitiator Irgacure 1173,

[0059] 4 parts of phenol,

[0060] 16 parts of ethyl acetate,

[0061] BYK-3700 5 copies,

[0062] To 48 parts of dipentaerythritol hexaacrylate (manufactured by Nippon Kayaku Co., Ltd.) and 16 parts of pentaerythritol triacrylate (manufactured by Tianjin Tianjiao Chemical Industry), 16 parts of 2-phenoxyethyl acrylate monomer (manufactured by Sartomer Chemical Industry) were added , Add 8 parts of photoinitiator Irgacure 1173 (manufactured by Nanjing Ji'an Chemical Co., Ltd.). The obtained mixture was diluted with a mixed solvent of 16 parts of ethyl acetate and 4 parts of phenol, and then 5 parts of organic silicon wetting aid BYK-3500 (manufactured by BYK Chemicals) was added, and the mixture was stirred well to obtain a hard coating composition.

[0063] The obtained hard coating composi...

Embodiment 3

[0065] 15 parts of pentaerythritol triacrylate,

[0066] 9 parts of trimethylolpropane triacrylate,

[0067] 6 parts of isobornyl acrylate,

[0068] 1 part of photoinitiator Irgacure 1173,

[0069] 16 parts of phenol,

[0070] 40 parts of ethanol,

[0071] 14 parts of butyl acetate,

[0072] BYK-3500 0.2 copies,

[0073] To 15 parts of pentaerythritol triacrylate (manufactured by Tianjin Tianjiao Chemical) and 9 parts of trimethylolpropane triacrylate (manufactured by Nippon Kayaku Co., Ltd.), add 6 parts of isobornyl acrylate (manufactured by Sartomer Chemical), and add 1 Photoinitiator Irgacure 1173 (manufactured by Nanjing Ji'an Chemical Co., Ltd.). Dilute the resulting mixture with a mixed solvent of 16 parts of phenol, 40 parts of ethanol and 14 parts of butyl acetate, and then add 0.2 parts of organic silicon wetting aid BYK-3500 (manufactured by BYK Chemicals), stir well to obtain a hard coat Layer composition.

[0074] The obtained hard coating composition was coated with a wire ...

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Abstract

Provided are a hard coating composition and a hardened membrane containing the same. The hard coating composition comprises, by weight, 30 to 80 parts of hydroxyl-containing acrylate monomers, 1 to 10 parts of an photoinitiator, 20 to 70 parts of a solvent and 0.1 part to 5 parts of a reactive organosilicon surface wetting auxiliary agent, wherein, the hydroxyl-containing acrylate monomers are a mixture of hydroxyl-containing multi-functional acrylate monomers and hydroxyl-containing low functional acrylate monomers mixed according to a weight ratio of 2:8 to 8:2. The composition provided in the invention has excellent adhesion to a PET substrate surface which is never treated and a PET substrate surface which has corona or a failure coating bottom; hardness of the hardened layer of the obtained hardened membrane is greater than 1H, and therefore, the hardened membrane can be used as a hardened membrane of an indium tin oxide (ITO) touch screen, an in-mold label (IML), or the like.

Description

Technical field [0001] The present invention relates to a hard coat composition and a cured film containing the hard coat composition. Background technique [0002] Due to its high light transmittance and low weight, PET substrate has been used more and more widely as a protective layer on the surface of various devices. In order to prevent scratches on the surface of the plastic substrate, people often place a hard coating on its surface. In order to improve the surface hardness of the substrate, scratch resistance, wear resistance and antifouling properties. However, because the surface of the PET substrate is inert, the adhesion of the hard coating composition to its surface is generally not ideal. Therefore, it is necessary for people to perform surface corona and coating on the surface of the PET substrate to improve the hard coating. Adhesion of the layer composition on it. Although these measures can solve the problem of poor adhesion, they also increase the cost of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D7/12B32B27/06B32B27/18
Inventor 李丽王宏伟鲁若娜王志坚
Owner CHINA LUCKY FILM CORP
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