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Hard coating film

A technology of hard coating film and hard coating, applied in the direction of coating, layered products, cellulose plastic material layered products, etc., can solve the problems of high production cost, lack of flexibility, processability, consumption, etc. Effects of excellent surface hardness, transparency, processability and bending resistance

Inactive Publication Date: 2019-07-09
DAICEL CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] On the other hand, glass is known as a material with very high surface hardness. In particular, it is known that the pencil hardness of the surface can be increased to 9H by alkali ion exchange treatment, but it cannot be aligned with a roller due to lack of flexibility and processability. Manufactured or processed in a roll-to-roll manner, which must be manufactured or processed in a single piece, which consumes high production costs

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0265] (Preparation of Cationic Curable Polysiloxane Resin)

[0266] In a 300-ml flask (reaction vessel) equipped with a thermometer, a stirring device, a reflux cooler, and a nitrogen inlet tube, under a stream of nitrogen, drop 161.5 mmol (39.79 g) of 2-(3,4-epoxy ring Hexyl) ethyltrimethoxysilane (hereinafter referred to as "EMS"), 9 millimoles (1.69g) of phenyltrimethoxysilane (hereinafter referred to as "PMS"), and 165.9g of acetone, and heated to 50 ℃. In the mixture thus obtained, 4.70 g (1.7 mmol as potassium carbonate) of a 5% potassium carbonate aqueous solution was dropped over 5 minutes, and then 1700 mmol (30.60 g) of water was dropped over 20 minutes. It should be noted that no significant temperature rise occurred during the dropping. Thereafter, the temperature was kept at 50° C., and the polycondensation reaction was performed for 4 hours under nitrogen gas flow.

[0267] The product in the reaction solution after the polycondensation reaction was analyzed,...

Embodiment 2～5

[0273] A hard coat film was prepared in the same manner as in Example 1 except that the composition of the hard coat liquid (curable composition) and the thickness of the hard coat layer were changed as shown in Table 1. In addition, the unit of the compounding quantity of the raw material of the curable composition described in Table 1 is a weight part. In addition, "-" in the compounding quantity in a table|surface shows that the said component was not mixed.

Embodiment 6

[0275] A hard coat film was prepared in the same manner as in Example 1 except that a polyimide film (trade name "OT-050" (non-stretched film), manufactured by TAIMIDE Co., Ltd., thickness 50 μm) was used instead of the triacetyl cellulose film .

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Abstract

Provided is a hard coating film which has high surface hardness and excellent transparency. The hard coating film is characterized by having a hard coating layer comprising a cured product of the curable composition mentioned below on at least one surface of a triacetylcellulose-based substrate, a polyimide-based substrate or a poly(ethylene naphthalate)-based substrate. The curable composition isa silicone resin composition which contains a cationically curable silicone resin and a leveling agent, and in which the cationically curable silicone resin contains silsesquioxane units. The proportion of epoxy group-containing constituent units relative to the overall quantity of siloxane constituent units in the cationically curable silicone resin is 50 mol.% or more, and the number average molecular weight of the cationically curable silicone resin is 1000-3000.

Description

technical field [0001] The present invention relates to a hard coat film having a hard coat layer formed of a cured product obtained by curing a curable composition. This application claims the priority of Japanese Patent Application No. 2016-228915 filed in Japan on November 25, 2016, and uses the contents thereof here. Background technique [0002] Generally, a hard coat film having a hard coat layer on one or both sides of a base material and having a pencil hardness of about 3H on the surface of the hard coat layer is widely used. As a material for forming a hard coat layer in such a hard coat film, a UV acrylic monomer is mainly used (for example, refer to Patent Document 1). In order to further increase the pencil hardness of the surface of the hard coat layer, there is also an example of adding nanoparticles to the hard coat layer. [0003] On the other hand, glass is known as a material with very high surface hardness. In particular, it is known that the pencil har...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04B32B7/02B32B27/00B32B27/38C08J7/043C08J7/046C08J7/05
CPCB32B7/02B32B27/00B32B27/38C08J2367/02C08J2301/12C08J2379/08C08J2483/04C08J7/0427C09D183/06C08G77/14C08G77/045C08J7/05C08J7/043C08J7/046B32B27/08B32B23/08B32B23/20B32B27/281B32B27/36B32B27/283B32B7/022B32B7/023B32B2307/536B32B2307/412C08J2301/10C08J2367/03
Inventor 菊地慎二
Owner DAICEL CHEM IND LTD