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Energy ray-curable resin composition, cured product and laminate

An energy ray curing and resin composition technology, which is applied in the field of cured products and laminates, and energy ray curable resin compositions, and can solve the problems of foreign matter, crack fragments, and lack of flexibility of the coating film.

Active Publication Date: 2015-02-25
SOMAR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the viewpoint of preventing scratches, it is only necessary to form a coating film with excellent scratch resistance and pencil hardness, but such a coating film lacks flexibility, causing problems in displays such as monitors, touch panels, mobile phones, and smartphones. When the shape of the screen is stamped, cracks occur, and the fragments that accompany the cracks become foreign objects.

Method used

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  • Energy ray-curable resin composition, cured product and laminate
  • Energy ray-curable resin composition, cured product and laminate
  • Energy ray-curable resin composition, cured product and laminate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] Add 75 parts by mass of methyl ethyl ketone (MEK) and 75 parts by mass of propylene glycol monomethyl ether (PGM) to (A1) 80 parts by mass, (B1) 20 parts by mass, (C1) 3 parts by mass, and (D) 1 part by mass, and stir was added to prepare the energy ray curable resin composition of Example 1 having a solid content of 41%.

[0112] Next, this energy ray-curable resin composition was applied to a polyethylene terephthalate film (trade name: COSMOSHINE A4300, manufactured by Toyobo Co., Ltd.) with a thickness of 188 μm as a base material using a Baker type film applicator. surface, dry at 140°C for 2 minutes at 300mJ / cm 2 It cured by irradiating ultraviolet rays to form a hard coat layer with a film thickness of 6 μm, thereby obtaining the laminate of Example 1. Table 1 shows the composition of the energy ray curable resin composition and the evaluation results of the laminate.

Embodiment 2～15

[0114] Using the energy ray-curable resin compositions of the compositions shown in Tables 1 to 3, respectively, it carried out similarly to Example 1, and produced the laminated body. In addition, about Examples 11-13, the film thickness of a hard-coat layer was made into 3 micrometers. In addition, regarding the laminated body of Example 14, the base material was made into a polyethylene terephthalate film (trade name: COSMOSHINE A4300, manufactured by Toyobo Co., Ltd.) with a thickness of 100 μm, and the film thickness of the hard coat layer was set to 100 μm. is 10 μm. The evaluation results of these laminates are collectively shown in the same table.

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Abstract

Provided are: an energy ray-curable resin composition which provides a coating film that has excellent scratch resistance and sufficient flexibility when cured; a cured product; and a laminate. An energy ray-curable resin composition of the present invention contains (A) a polyfunctional urethane (meth)acrylate oligomer that has 10-20 energy ray-curable functional groups, (B) at least one substance that is selected from among (meth)acrylate monomers having a cyclo ring structure and 2-6 energy ray-curable functional groups, (meth)acrylate monomers having 3-15 ethylene oxide chains and (meth)acrylate oligomers having a dendritic structure, and (C) a photopolymerization initiator. The blending ratio by mass of the component (A) to the component (B) is within the range from 60:40 to 95:5.

Description

technical field [0001] The present invention relates to an energy ray curable resin composition, a cured product, and a laminate. Background technique [0002] Hard coatings are widely used in the display screens of monitors, touch panels, and mobile phones. Especially, mobile products such as touch panels, mobile phones, and smart phones are often in contact with objects such as fingers and pens in daily life. Scratches are a problem. From the viewpoint of preventing scratches, it is sufficient to form a coating film with excellent scratch resistance and pencil hardness, but such a coating film lacks flexibility, which causes problems in displays such as displays, touch panels, mobile phones, and smartphones. Cracks occur when the shape of the screen is press-worked, and the resulting fragments of the cracks become foreign matter. Therefore, hard coat films having flexibility while maintaining hardness have been proposed (Patent Document 1, Patent Document 2). [0003] p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/06B32B27/16C08J7/04C09D4/02C09D7/12C09D175/06C08J7/043C08J7/046
CPCB32B27/16C09D175/16C08J7/047C08J2367/02C08F290/067C08J2475/14C08J7/0427C08J7/043C08J7/046
Inventor 中岛聪史外川优衣
Owner SOMAR CORP
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