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Anti-reflection material

An anti-reflection, substrate technology, used in instruments, coatings, optics, etc., to solve problems such as reduced visibility

Inactive Publication Date: 2013-10-02
UBE NITTO KASEI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] On interfaces (surfaces) that come into contact with the air, such as various displays, lenses, and display windows, reduced visibility due to reflection of sunlight or lighting on the surface has become a problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0110] Next, the present invention will be described in more detail by way of examples, but the present invention is not limited by these examples.

[0111] In addition, the antireflection material obtained in each example was evaluated by the method shown below.

[0112](1) Determination of reflectivity at 400nm and 800nm

[0113] A black PET film with an adhesive (Kutkiri Miel, manufactured by Bagawa Paper Co., Ltd.) was laminated on the inside of the sample to prepare a sample.

[0114] Using a sample cut to 50 mm×50 mm, the reflection waveform was measured with a spectrophotometer (F20, manufactured by FILMETRICS), and the reflectance (R) at 400 nm and 800 nm was measured.

[0115] Each reflectance R was evaluated on 11 levels according to the following formula.

[0116] 10 points 0≦R<0.2

[0117] 9 points 0.2≦R<0.4

[0118] 8 points 0.4≦R<0.6

[0119] 7 points 0.6≦R<0.8

[0120] 6 points 0.8≦R<1.0

[0121] 5 points 1.0≦R<1.2

[0122] 4 points 1.2≦R<1.4

[0123] 3...

preparation example 1

[0176] Preparation Example 1 Preparation of Adhesive Component-1 (B-1)

[0177] Dissolve 317.91 g of glycidoxypropyltrimethoxysilane and 146.66 g of an oligomer of tetramethoxysilane "Colcoat Co., Ltd., trade name "Mechil Siriket-51" in 242.70 g of methanol to make the condensate The mass ratio of the constituent units is 3:1, and a mixture of 32.43g of nitric acid, 225.64g of water and 34.67g of methanol is added dropwise to it at a concentration of 0.1 mol / L, and reacted at 30°C for 24 hours to prepare a solid concentration of 30 Mass % binder liquid [(B)-1 component].

preparation example 2

[0178] Preparation Example 2 Preparation of Adhesive Component-2 (B-2)

[0179] Dissolve 289.05g of mercaptopropyltrimethoxysilane and 222.05g of tetraisopropoxytitanium in 312.45g of ethylene glycol mono-tert-butyl ether, so that the mass ratio of the constituent units in the condensate reaches 3:1. After adding dropwise a mixed solution of 101.42 g of concentrated nitric acid, 30.40 g of water, and 44.64 g of ethylene glycol mono-tert-butyl ether, react at 30°C for 4 hours to prepare a binder solution with a solid content concentration of 25% by mass [(B) -2 ingredients].

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Abstract

An anti-reflection material which is a coating film that is formed on at least a part of the surface of a light-transmitting base and that is composed of a binder, silica particles and air pockets. The anti-reflection material is characterized in that: the silica particles are arranged in two layers from the base surface; the first layer on the base side is densely filled with the particles and there are the air pockets between the base and the silica particles; and the silica particles in the second layer partially cover the silica particles in the first layer and there are the air pockets between the silica particles in the first layer and the silica particles in the second layer.

Description

technical field [0001] The present invention relates to an anti-reflection material, and more specifically, to an anti-reflection material, which is a coating film that can be produced with one coating, and which has optical wavelengths at the low wavelength region (400nm) and the long wavelength region (800nm) The reflectance is 3.5% or less, the minimum value of reflectance is 0.8% or less, and the peak position is 460-720nm. The anti-reflection performance can make the change of haze value from the base material 1.5% or less. Background technique [0002] On the interfaces (surfaces) of various displays, lenses, display windows, etc. that come into contact with the air, reduced visibility due to reflection of sunlight or lighting on the surface has become a problem. As a method for reducing reflection, there is known a method of laminating multilayer films having different refractive indices so that reflected light at the surface of the film and reflected light at the int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/11
CPCG02B1/115G02B1/113G02B1/11C09J183/04C08K3/36C09J183/14
Inventor 小林章洋中野达也高田隆久
Owner UBE NITTO KASEI CO LTD