Surface reflection prevention coating material and surface reflection prevention coating film

A surface reflection and coating technology, applied in epoxy resin coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of image quality reduction, image ghosting, flare, etc., achieve excellent low gloss, reduce full light The effect of reflectivity

Pending Publication Date: 2022-06-28
CANON CHEMICALS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In optical devices such as cameras and video cameras, stray light sometimes occurs due to diffuse reflection and scattering at the optical path such as the lens barrel, causing ghosting and flare in the imaged image, which is one of the causes of image quality degradation

Method used

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  • Surface reflection prevention coating material and surface reflection prevention coating film
  • Surface reflection prevention coating material and surface reflection prevention coating film
  • Surface reflection prevention coating material and surface reflection prevention coating film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0162]

[0163] 10 parts by mass of dye A, 27 parts by mass of silica A, and 5 parts by mass of resin particles B were prepared with respect to 100 parts by mass of epoxy resin (90 parts by mass of main agent + 10 parts by mass of latent curing agent) of resin A-1 , 5 parts by mass of resin particles C, 1 17 parts by mass of adhesion imparting agent, and 1 200 parts by mass of organic solvent. First, the prepared dye A, silica A, resin particles B, resin particles C, adhesion imparting agent 1 and organic solvent 1 are mixed with the main ingredient of resin A-1 to prepare a paint mixture. The amount of each component was adjusted so that the total amount of the paint mixture would be 200 g.

[0164] Next, 24 balls having a diameter of 15 mm and 23 balls having a diameter of 10 mm (135 g in total) were put into a ball mill having a capacity of 500 mL, and the paint mixture was dispersed at 60 rpm for 5 hours. After the dispersion, 10 parts by mass of the latent curing agent...

Embodiment 2、6～12、14、16

[0168] (Examples 2, 6 to 12, 14, 16, and Comparative Examples 1 to 7)

[0169] In Example 1, except having changed the kinds and amounts of dyes, silica, and resin particles as shown in Tables 1, 2, and 4, it was carried out in the same manner as in Example 1 to prepare a coating material. Moreover, using the obtained coating material, it carried out similarly to Example 1, and produced the coating film.

[0170] In addition, the value of each material described in Tables 1-4 is a part number.

Embodiment 3、17

[0172] In Example 1, except having changed the kinds and amounts of dye, silica, and resin particles as shown in Tables 1 and 2, it was carried out in the same manner as in Example 1 to prepare a coating material. Moreover, except having changed the gap of an applicator to 200 micrometers, it carried out similarly to Example 1, and produced the coating film using the obtained paint.

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Abstract

Provided are an anti-surface-reflection coating material and an anti-surface-reflection coating film. Provided is a surface-reflection-preventing coating material capable of forming a surface-reflection-preventing coating film which is capable of reducing the total light reflectance and has excellent low glossiness. A surface reflection prevention coating material which is characterized by containing a binder resin, a dye, resin particles, and silica, the dye being contained in an amount of 3-23 parts by mass per 100 parts by mass of the binder resin, the resin particles having an average particle diameter of 40-100 [mu] m, and the silica having an average particle diameter of 40-100 [mu] m. The content ratio of the resin particles is from 10 parts by mass to 54 parts by mass (inclusive) with respect to 100 parts by mass of the binder resin, the content ratio of the silica is from 25 parts by mass to 36 parts by mass (inclusive) with respect to 100 parts by mass of the binder resin, and the surface reflection prevention coating film does not contain black fine particles having a refractive index of more than 1.80.

Description

technical field [0001] The present invention relates to an anti-reflection coating and an anti-reflection coating film formed using the aforementioned anti-reflection coating. Background technique [0002] In optical devices such as cameras and video cameras, stray light may be generated due to diffuse reflection and scattering at the optical path portion such as a lens barrel, resulting in ghosting and flare in the imaged image, which is one of the reasons for the degradation of image quality. Therefore, in order to suppress the degradation of optical performance caused by such stray light, it is necessary to apply a black anti-reflection paint or stick an anti-reflection film to the optical path parts such as the lens barrel and the diaphragm. [0003] On the other hand, black antireflection coatings and antireflection films are used not only in optical devices such as cameras, but also in display devices with light emission, such as meters, to improve visibility by preven...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D133/00C09D175/04C09D7/61C09D7/65
CPCC09D163/00C09D133/00C09D175/04C09D7/61C09D7/65C08L77/00C08K3/36
Inventor 内田敏朗中谷直治
Owner CANON CHEMICALS INC
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