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Dazzling-proof hard coating material and high hardness hard coating film using same

A hard coating and anti-glare technology, applied in antifouling/underwater coatings, coatings, devices for coating liquid on the surface, etc., can solve the problem of hard coating films and hard coatings that cannot reach the display Solve problems such as curling at the end of the film and reduced visibility of the display, achieve high hardness, avoid curling, and increase production efficiency

Inactive Publication Date: 2008-08-06
DONGWOO FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, problems such as precipitation of colloidal silica particles modified by organic matter or silane on the surface of silica, stability problems due to gel formation, degree of curing, optical transparency and adhesion, etc., are still not up to the standard. Requirements for Hard Coat Films for Display Protection
[0006] In addition, when the thickness of the existing hard coat film is increased in order to increase the hardness, although the hardness of the obtained hard coat film can be increased, the hard coat peeling, curing shrinkage, and hardness caused by moisture and heat shrinkage may occur. The phenomenon of curling (Curl) at the end of the coating film reduces the operability
Existing hard coat films also have the problem that the visibility of the display is reduced due to the reflection of external light

Method used

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  • Dazzling-proof hard coating material and high hardness hard coating film using same
  • Dazzling-proof hard coating material and high hardness hard coating film using same
  • Dazzling-proof hard coating material and high hardness hard coating film using same

Examples

Experimental program
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Effect test

preparation example Construction

[0036] The above-mentioned silica particles used for the preparation of organic-inorganic silica particles are not particularly limited, but it is preferable to use colloidal silica sol dispersed in an organic solvent. As the organic solvent, methyl ethyl ketone and methyl isobutyl ketone among ketones, and isopropanol and methanol among alcohols can be used. Among them, in consideration of dispersibility and stability, methyl isobutyl ketone is preferably used.

[0037] Commercially available colloidal silica sol products include methyl ethyl ketone silica sol (MEK-ST, manufactured by Nissan Chemical Company, with an average particle size of 22nm and a silica content of 30%), silica powder Shaped particles (aerosil TT600, manufactured by aerosil, average particle size of 40nm), methyl isobutyl ketone silica sol (MIBK-ST, manufactured by Nissan Chemical Company, average particle size of 22nm, silica content of 30%) , Isopropanol silica sol (IPA-ST, manufactured by Nissan Chemical ...

Synthetic example 1

[0069] At a temperature of 0°C, slowly drop 20.6 parts by weight of isophorone diisocyanate into 14.2 parts by weight of bis[3-(trimethoxysilyl)propyl]amine and 0.2 parts by weight of isophorone diisocyanate over 1 hour. Dibutyl tin dimonthly silicate in solution. After the solution was stirred at 25°C for 30 minutes, 71.4 parts by weight of pentaerythritol triacrylate was slowly dropped in at 30°C over 1 hour. After dropping, the temperature was increased to 60°C, and stirring was performed for 3 hours.

[0070] The peak of the infrared absorption spectrum of the product is 1720 cm of [-N-(C=O)-NH-] -1 , The peak value of [-O-(C=O)-NH-] is 1660cm -1 .

Synthetic example 2

[0072] At a temperature of 0°C, slowly drop 20.6 parts by weight of isophorone diisocyanate into 14.2 parts by weight of bis[3-(trimethoxysilyl)propyl]amine and 0.2 parts by weight of isophorone diisocyanate over 1 hour. Dibutyl tin dimonthly silicate in solution. After the solution was stirred at 25°C for 30 minutes, 125.6 parts by weight of dipentaerythritol penta / hexaacrylate was slowly dropped at 30°C over 1 hour. After dropping, the temperature was raised to 60°C and stirring was performed for 3 hours.

[0073] The peak of the infrared absorption spectrum of the product is 1720 cm of [-N-(C=O)-NH-] -1 , The peak value of [-O-(C=O)-NH-] is 1660cm -1 .

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Abstract

An anti-glare hard coating solution is provided to retain good physical properties needed for hard coating films, and to suppress a peeling-off or curling phenomenon of a hard coating layer. An anti-glare hard coating solution includes (A) 5-50wt% of organic-inorganic silica particles in which a multi-functional silane compound comprising multi-functional (meth)acrylate represented by the following formula 1 is chemically bound to hydroxyl groups on the surface of the silica particle, (B) 5-40wt% of multi-functional (meth)acrylate, (C) 0.1-10wt% of an initiator, and (D) 1-20wt% of silicon fine particles, based on 100wt% of the hard coating solution.

Description

Technical field [0001] The invention relates to an anti-glare hard coating paint and a high-hardness hard coating film using the paint. Background technique [0002] The invention relates to an anti-glare hard coating paint and a high-hardness hard coating film using the paint. [0003] Existing hard coating films are used on various display panels, such as liquid crystal displays (LCD), plasma displays (PDP), cathode ray tubes (CRT), electroluminescence displays (EL), etc., to protect Its surface. In addition to the hard coating performance, it can also provide abrasion resistance and / or easy removal (ie, antifouling performance) for fingerprints and marking with a pen. [0004] As the material for forming the hard coat film, when only ultraviolet curable acrylic hard coat materials such as polyester, acrylate, urethane acrylate, epoxy acrylate, etc. are used, these organic substances alone cannot have a hard coat. Sufficient surface protection properties required by the layer f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D4/00C08K5/54G02B1/11G02B5/30B05D7/24B82Y20/00C08F2/44C08F290/06C08G77/388C08J7/04C09D4/02G02B1/10G02B1/14
CPCC09D5/16C09D133/04C09D183/04G02B5/30G02F1/13
Inventor 林巨山李字映金玉馨
Owner DONGWOO FINE CHEM CO LTD
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