Surface anti-reflective coating for spray coating and surface anti-reflective coating film

An anti-reflection and coating technology, applied in the direction of coating, etc., can solve the problem that it is difficult to control the concave-convex shape of micro parts, and achieve the effect of high anti-reflection performance and excellent blackness

Inactive Publication Date: 2020-06-23
CANON CHEMICALS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The light-shielding film described in Japanese Patent Laid-Open No. 2010-175653 has the disadvantage that it cannot cope with

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0060] (Example 1)

[0061] With respect to 100 parts by mass of acrylic resin, 22 parts by mass of carbon black, 14 parts by mass of hydrophobized dry-process silica, 17 parts by mass of polyamide resin particles with an average particle diameter of 15 μm, 10 parts by mass of dye, and organic The solvent was mixed in a ratio of 133 parts by mass to prepare a paint mixture. The paint mixture was adjusted so that the total amount was 200 g. Next, using a ball mill with a capacity of 500ml, put in 20 balls and 20 balls (112g in total) of the same were dispersed at 90 rpm for 5 hours to produce paint. The obtained paint is diluted with an organic solvent to have a viscosity of 20-30 mPa·s to prepare a paint for coating. Using the obtained coating material, the coating machine used RG-3L (manufactured by ANEST IWATA Corporation), and the coating was blown on the PET film 3 times from a distance of 30 cm at an atomizing pressure of 0.2 MPa and a speed of 15 cm / sec. . After the p...

Example

[0062] (Examples 2-15, Comparative Examples 1-7, 10)

[0063] Except that the types and amounts of silica and coarse particles used in the preparation of the coating material and the amount of the dye were changed as shown in Tables 1 to 3, the coating material was prepared in the same manner as in Example 1. Moreover, using the obtained paint, it carried out similarly to Example 1, and produced the coating film.

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PUM

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Abstract

Surface anti-reflective coating for spray coating and a surface anti-reflective coating film are coating. The coating has high anti-reflective performance and excellent pitch blackness even in a formof thin film. The coating is characterized in that the coating comprises binder resin, carbon black, hydrophobized dry silica, coarse particles, dye, and solvents; the coarse particles are polyamide resin particles having an average particle size of 10 [mu]m or more and 20 [mu]m or below; relative to 100 parts by mass of the binder resin, the dosage of the polyamide resin particles is 10 parts orabove and 44 parts or below, by mass, and the dosage of the dry silica is 14 parts or above by mass.

Description

technical field [0001] The present invention relates to a surface antireflection coating for atomization coating, and a surface antireflection coating film using the above surface antireflection coating for atomization coating. Background technique [0002] In optical devices such as digital cameras and digital video cameras, stray light sometimes occurs due to diffuse reflection and scattering in the optical path such as the lens barrel, resulting in ghosting and flare in the imaged image, which is one of the causes of image quality degradation. Therefore, in order to suppress the reduction in optical performance caused by such stray light, black anti-reflection paint or anti-reflection film is applied to optical path parts such as lens barrels and apertures. [0003] On the other hand, black antireflection paints and antireflection films are used not only in optical devices such as cameras but also in display devices with light emission such as instruments to improve visib...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D7/62C09D7/61C09D7/65
CPCC09D133/04C09D7/62C09D7/61C09D7/65C08L77/00C08K3/36C08K3/04
Inventor 井野口翔太中谷直治
Owner CANON CHEMICALS INC
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