Hard coat film and curable resin composition for hard coat layer

A technology of curable resin and hard coating, applied in the direction of coating, layered products, etc., can solve the problems of impairing operability, difficult to achieve mechanical strength, cracking of hard coating, etc., and achieve the effect of excellent scratch resistance

Active Publication Date: 2010-06-09
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that when the thickness is increased, although the hardness increases, cracks (cracks) are likely to occur in the hard coat layer, or warping of the entire laminate due to curing shrinkage of the components of the hard coat layer (so-called curling), when affixing the laminate to a display, it will

Method used

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  • Hard coat film and curable resin composition for hard coat layer
  • Hard coat film and curable resin composition for hard coat layer
  • Hard coat film and curable resin composition for hard coat layer

Examples

Experimental program
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Embodiment

[0363] Hereinafter, examples are given to further specifically describe the present invention. The present invention is not limited by these descriptions.

[0364] The series of embodiments A are experimental examples related to the first hard coat film and the third hard coat film. The series of embodiments B are experimental examples related to the second hard coating film.

[0365]

Embodiment A1

[0367] (1) Preparation of special-shaped silica particles

[0368] In 2000g of silica fine particles (1) (manufactured by Nikki Catalyst Chemicals Co., Ltd., SI-550, average primary particle size 5nm, SiO 2 Concentration: 20% by weight, Na content in silica: 2700ppm), add 6000g of ion exchange water, then add 400g of cation exchange resin (Mitsubishi Chemical Co., Ltd., SK-1BH), stir for 1 hour and carry out dealkalization treatment . Next, after separating the cation-exchange resin, 400 g of anion-exchange resin (manufactured by Mitsubishi Chemical Corporation, SANUPC) was added, stirred for 1 hour, and deanionized. Add 400 g of cation exchange resin (Mitsubishi Chemical Corporation, SK-1BH) again, stir for 1 hour, and perform dealkalization treatment to prepare SiO 2 A dispersion of silica fine particles at a concentration of 5% by weight. At this time, the Na content in the silica particles was 200 ppm.

[0369] Next, the pH of the dispersion liquid was adjusted to 4.0 ...

Embodiment A2

[0381] In the preparation of the special-shaped silica microparticles of the above-mentioned Example A1, except that the average connection number of the silica microparticles was 5, the same operation as the above-mentioned Example A1 was performed to produce the silica microparticles of Example A2. Hard coating.

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PUM

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Abstract

A curable resin composition for a hard coat layer capable of forming a hard coat layer having high hardness even with thin thickness and/or excellent in abrasion resistance and hardness, and a hard coat film using the curable resin composition are provided. A hard coat film in which a hard coat layer is provided on one side of a transparent substrate film, wherein the hard coat layer comprises a matrix in a crosslinked state and an aggregate in which 3 to 100 silica fine particles having an average primary particle diameter of 1 to 100 nm are aggregated, and wherein the aggregate is cross-linked to the matrix, and an irregularly shaped silica fine particle constituted with 3 to 20 silica fine particles having an average primary particle diameter of 1 to 100 nm connected to each other by inorganic chemical bonding is contained as a part of the aggregates. The hard coat layer further contains a silica fine particle preferably.

Description

technical field [0001] The present invention relates to a hard coat film in which a hard coat layer is provided on a transparent base film and a curable resin combination for a hard coat layer for forming the hard coat layer, which are used for the purpose of protecting the surface of a display or the like thing. Background technique [0002] The image display surfaces of image display devices such as liquid crystal displays, CRT displays, projection displays, plasma displays, and electroluminescent displays are required to be provided with scratch resistance so that they will not be damaged during use. On the other hand, generally by using a hard coat film (optical laminate) provided with a hard coat (HC) layer on a base film or further provided with optical functions such as anti-reflection or anti-glare properties, the Scratch resistance of an image display surface of an image display device. [0003] Usually, a hard coat layer is formed on a base film using a photopoly...

Claims

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Application Information

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IPC IPC(8): B32B7/02C09D4/02C09D7/12
Inventor 堀尾智之黑田刚志岛野绘美山本佳奈清原欣子田崎启子
Owner DAI NIPPON PRINTING CO LTD
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