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 objects of various shapes like paint
In addition, it is difficult to control the uneven shape of micro parts without using particles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

Embodiment 2～15、 comparative example 1～7、10

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

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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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