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

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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, an

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

Example Embodiment

[0156] [Example 1]

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

[0158] As a low-refractive-index component, a silica-based hollow fine particle dispersion sol (manufactured by Catalytic Chemical Industry Co., Ltd.: Sul-eria 1420, average particle diameter: 60 nm, concentration: 20.5% by weight, dispersed Medium: isopropanol, particle refractive index: 1.30). To 100 g of this sol was mixed 10 g of perfluorooctylethyltriethoxysilane (Toray Dow Corning Co., Ltd.: AY43-158E, SiO 2 component: 26.6% by weight), 10 g of ultrapure water was added, and the mixture was 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 amount of the surface-treated silica-based hollow fine particle-dispersed sol was measured and found to be 8.3 μeq / g. As a high-refractive-index component, titanium oxide particles (manufactured by Catalyst Chemicals Co., Ltd.: TITAN MICRO...

Example Embodiment

[0178] [Example 2]

[0179] Preparation of coating material for forming transparent film (A-2)

[0180] In Example 1, except that 7.7 g of the surface-treated silica-based hollow fine particle dispersion and 45 g of the surface-treated titanium oxide particle dispersion were used, the same procedure was carried out to prepare a paint for forming a transparent film (A-2) .

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

[0182] In Example 1, except having used the paint (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 a layer of about 100 nm thick was formed on the upper part of the silica-based hollow fine particles, and titanium oxide particles were present in the lower part.

[0183] The total light transmittance, haze, and reflectance of light having a wavelength o...

Example Embodiment

[0184] [Example 3]

[0185] Preparation of coating material for forming transparent film (A-3)

[0186] In Example 1, except that 7.7 g of the surface-treated silica-based hollow fine particle dispersion and 10 g of the surface-treated titanium oxide particle dispersion were used, the same procedure was carried out to prepare a paint for forming a transparent film (A-3) .

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

[0188] In Example 1, except having used the paint (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 a layer of about 100 nm thick was formed on the upper part of the silica-based hollow fine particles, and titanium oxide particles were present in the lower part.

[0189] The total light transmittance, haze, and reflectance of light having a wavelength o...

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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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