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Paint for transparent film and transparent film coated substrate

A film and transparent technology, applied in coatings, instruments, optics, etc., can solve the problems of inability to form particle layers, low bright room contrast, no anti-glare performance, etc., to achieve good productivity and economy, good strength, Good effect of anti-reflection performance and anti-glare performance

Inactive Publication Date: 2008-07-23
JGC CATALYSTS & CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method may not be able to form a fine particle layer in a form in which the two types of fine particles are completely separated up and down, and it does not have anti-glare performance, so the contrast in the bright room is low, and the display performance is insufficient when used in a display device

Method used

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  • Paint for transparent film and transparent film coated substrate
  • Paint for transparent film and transparent film coated substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0157] Preparation of transparent film-forming coating material (A-1)

[0158] As a low refractive index component, a silica-based hollow fine particle dispersion sol (manufactured by Catalyst Chemical Industry Co., Ltd.: Sulliar 1420, average particle diameter: 60 nm, concentration: 20.5% by weight, dispersed Medium: isopropanol, particle refractive index: 1.30). In 100 g of this sol, 10 g of perfluorooctylethyl triethoxysilane (Toray Dow Corning Co., Ltd. (Toray Dow Corning Co., Ltd.): AY43-158E, SiO 2 Component: 26.6% by weight), 10 g of ultrapure water was added, and stirred at 40° C. for 5 hours to obtain a surface-treated silica-based hollow fine particle dispersion sol (solid content: 19.3%). The surface charge of the surface-treated silica-based hollow fine particle dispersion sol was measured and found to be 8.3 μeq / g. Titanium oxide particles (manufactured by Shokubai Kasei Co., Ltd.: TITAN MICROBEAD, average particle diameter: 3 μm, particle refractive index: 2.40...

Embodiment 2

[0179] Preparation of transparent film-forming paint (A-2)

[0180] In Example 1, except that 7.7 g of the surface-treated silica-based hollow particle dispersion and 45 g of the surface-treated titanium oxide particle dispersion were used, the transparent film-forming paint (A-2) was prepared in the same manner. .

[0181] Preparation of substrate (2) with transparent film

[0182] In Example 1, except having used the coating material (A-2) for transparent film formation, it carried out similarly, and produced the base material (2) with a transparent film. The cross-section of the transparent film was observed with a transmission electron microscope, and it was confirmed that the silica-based hollow fine particles formed a layer with a thickness of about 100 nm in the upper part and titanium oxide particles existed in the lower part.

[0183] The total light transmittance, haze, and reflectance of light rays with a wavelength of 550 nm of the obtained substrate (2) with a t...

Embodiment 3

[0185] Preparation of transparent film-forming paint (A-3)

[0186] In Example 1, except that 7.7 g of the surface-treated silica-based hollow particle dispersion and 10 g of the surface-treated titanium oxide particle dispersion were used, a transparent film-forming paint (A-3) was produced in the same manner. .

[0187] Preparation of substrate (3) with transparent film

[0188] In Example 1, except having used the coating material (A-3) for transparent film formation, it carried out similarly, and produced the base material (3) with a transparent film. The cross-section of the transparent film was observed with a transmission electron microscope, and it was confirmed that the silica-based hollow fine particles formed a layer with a thickness of about 100 nm in the upper part and titanium oxide particles existed in the lower part.

[0189] The total light transmittance, haze, and reflectance of light rays with a wavelength of 550 nm of the obtained substrate (3) with a tra...

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Abstract

The invention provides a paint for transparent film and transparent film coated substrate formed by once coating the paint for transparent film and drying, with good sealing property, intension, antireflection and antidazzle performance, producibility and economical efficiency. The paint for transparent film comprises: particles of low refractive index with different affinity to the substrate forming component and particles of high refractive index, substrate forming component, polymerization initiator and solvent, characterized in that the particles of low refractive index and particles of high refractive index are subjected to surface treatment by silane coupler, therefore the refractive index (nA) of the particles of low refractive index (A) is at the range of 1.20-1.45, and the mean diameter is at the range of 5-200nm, the surface charge amount (QA) is at the range of 5-80ueq / g and the refractive index (nB) of the particles of high refractive index (B) is higher than the nA, and the mean diameter is at the range of 0.5-5um, the surface charge amount (QB) is at the range of 25-100ueq / g and the concentration of the particles of low refractive index is at the range of 0.1-10 weight% calculated in solid component and the concentration of the particles of high refractive index is at the range of 0.1-10 weight% calculated in solid component and the concentration of the substrate forming component is at the range of 1-30 weight% calculated in solid component.

Description

technical field [0001] The present invention relates to a new paint for forming a transparent film and a substrate having a transparent film formed using the paint for forming a transparent film. Background technique [0002] All the time, in order to prevent the reflection of substrate surfaces such as glass, plastic sheet, plastic lens, the method for forming anti-reflection film on substrate surface is known, for example known by coating method, vapor deposition method, CVD method etc. on glass or The surface of the plastic substrate is formed with a coating of low-refractive index substances such as fluorine-containing resins and magnesium fluoride, or a coating solution containing low-refractive index particles such as silica particles is coated on the surface of the substrate to form an anti-reflection Coating method (for example, refer to Japanese Patent Application Laid-Open No. 7-133105). Conventionally, there is also known a method of forming a high-refractive-ind...

Claims

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Application Information

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IPC IPC(8): C09D7/12C09D183/00C09D133/04G02B1/10
CPCC08L2201/10C09D5/00C09D7/20C09D7/70C09D133/10
Inventor 松田政幸熊泽光章平井俊晴
Owner JGC CATALYSTS & CHEM LTD
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