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Ultraviolet curable composition for cyclic olefin resin and cyclic olefin resin film using the same

A technology of cyclic olefin resin and curable composition, which is applied in the direction of coating, etc., can solve the problems of lower yield, higher cost, yellow coloring of cured coating film, etc., and achieve the effect of less coloring and excellent adhesion

Active Publication Date: 2017-03-15
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can improve the adhesion between the surface of the cyclic olefin resin film and the hard coat layer, it has the following problems: the process of applying the primer layer and drying it is added, which leads to a decrease in yield and an increase in cost.
However, this ultraviolet curable composition has a problem of coloring the cured coating film yellow.

Method used

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  • Ultraviolet curable composition for cyclic olefin resin and cyclic olefin resin film using the same
  • Ultraviolet curable composition for cyclic olefin resin and cyclic olefin resin film using the same
  • Ultraviolet curable composition for cyclic olefin resin and cyclic olefin resin film using the same

Examples

Experimental program
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Effect test

Embodiment

[0060] The present invention will be described more specifically by way of examples below.

Synthetic example 1

[0061] (Synthesis Example 1: Synthesis of Urethane Acrylate (A2-1))

[0062] Put 254 parts by mass of butyl acetate, 222 parts by mass of isophorone diisocyanate, 0.5 parts by mass of p-methoxyphenol and 0.5 parts by mass of dibutyltin diacetate into a flask equipped with a stirrer, a gas inlet tube, a condenser tube and a thermometer Parts, while blowing air, while raising the temperature to 70 ° C, and then dropwise added a mixture of pentaerythritol triacrylate (hereinafter abbreviated as "PE3A") and pentaerythritol tetraacrylate (hereinafter abbreviated as "PE4A") (PE3A / PE4A=75 / 25 (mass ratio)) 400 parts by mass and 497 parts by mass of isocyanuric acid oxirane-modified diacrylate. After the dropwise addition, react at 70° C. for 3 hours, and then allow the reaction to proceed to 2250 cm of the isocyanate group. -1 The solution containing the urethane acrylate (A2-1) which has 6 acryloyl groups in 1 molecule until the infrared absorption spectrum disappears, and the non-...

Embodiment 1

[0064] 35 parts by mass of a mixture (DPHA / DPPA=65 / 35 (mass ratio)) of dipentaerythritol hexaacrylate (hereinafter abbreviated as "DPHA") and dipentaerythritol pentaacrylate (hereinafter abbreviated as "DPPA"), poly 30% by mass methyl ethyl ketone dispersion of 65 parts by mass of ester acrylate (tetrafunctional, molecular weight 1,800), silica microparticles ("MEK-ST" manufactured by Nissan Chemical Industries, Ltd., average particle diameter 10 to 20 nm, organosilica sol) ; Hereinafter abbreviated as "silica microparticle dispersion (1)".) 25 parts by mass (7.5 parts by mass based on silica microparticles), and 2-(2-oxo-2-phenyl Acetoxyethoxy) ethyl ester (hereinafter abbreviated as "photopolymerization initiator (B1-1)") 3 parts by mass was stirred evenly, and then diluted with methyl ethyl ketone to prepare an ultraviolet curable composition with a non-volatile content of 25 mass%. thing (1).

[0065] [Preparation of film for evaluation]

[0066] Using a wire bar, the ul...

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Abstract

The present invention provides an ultraviolet curable composition for cyclic olefin resin, characterized by containing an ultraviolet curable compound (A) and a photopolymerization initiator (B) having two or more of the following formulas in one molecule The compound of the group shown in (1) is an essential component. The ultraviolet curable composition for cyclic olefin resin of the present invention is applied to the surface of the cyclic olefin resin and cured, thereby forming a composition containing high scratch resistance, excellent adhesion to the cyclic olefin resin, and little coloring. Hard coat for cured paint film.

Description

technical field [0001] The present invention relates to an ultraviolet curable composition for a cyclic olefin resin and a cyclic olefin resin film using the same, which can be formed by coating on the surface of a cyclic olefin resin and curing, and can form a substrate with high scratch resistance Hard coat with excellent adhesion and less colored cured film. Background technique [0002] Cyclic olefin resin films are excellent in transparency, low birefringence, low moisture absorption, heat resistance, electrical insulation, and chemical resistance, and are widely used in optical components, medical care, packaging films, automobiles, and semiconductor applications. In particular, among optical members, the use of cyclic olefin resin films with high transparency and low hygroscopicity in place of polyparaphenylene resin films, which have been used until now, is being studied in line with the diversification of units in liquid crystal displays and touch panel applications...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F2/50C08J7/04C09D4/02C08J7/043C08J7/046
CPCC08F2/50C08J2323/08C08J2423/08C08J7/0427C08J7/043C08J7/046
Inventor 奥村彰朗西泽茂年
Owner DIC CORP
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