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Active energy ray-curable resin composition and article and molded product using the same

A curing resin, active energy ray technology, used in coatings, polyurea/polyurethane coatings, etc., can solve the problems of low hardness and insufficient scratch resistance, and achieve the effect of small curing shrinkage and curly inhibition.

Inactive Publication Date: 2008-06-18
DAINIPPON INK & CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this active energy ray curable resin composition has low hardness and insufficient scratch resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0072] Hereinafter, the present invention will be explained more specifically by citing examples and comparative examples.

Synthetic example 1

[0073] (Synthesis example 1) Synthesis of urethane acrylate (A1)

[0074]In a flask equipped with a stirrer, a gas introduction tube, a cooling tube, and a thermometer, 250 parts by mass of butyl acetate, 206 parts by mass of norbornane diisocyanate (hereinafter referred to as "NBDI"), and 0.5 parts by mass of p-methoxy were charged. Phenol, 0.5 parts by mass of dibutyltin diacetate, and air was blown into it. After the temperature was raised to 70°C, 795 parts by mass of pentaerythritol triacrylate (hereinafter referred to as "PE3A") / pentaerythritol tetraacrylate (hereinafter referred to as "PE3A") / pentaerythritol tetraacrylate ( Hereinafter, it is referred to as "PE4A") mixture (mixture with a mass ratio of 75 / 25). After the dripping is completed, react at 70°C for 3 hours, and further react until 2250 cm representing the isocyanate group -1 The infrared absorption spectrum disappeared, and a urethane acrylate (A1) / pentaerythritol tetraacrylate mixture (a mixture with a mass rat...

Synthetic example 2

[0075] (Synthesis example 2) Synthesis of urethane acrylate (A2)

[0076] In a flask equipped with a stirrer, a gas introduction tube, a cooling tube, and a thermometer, 586 parts by mass of butyl acetate, 168 parts by mass of hexamethylene diisocyanate (hereinafter referred to as "HDI"), and 1.2 parts by mass of p-methoxy Dipentaerythritol pentaacrylate (hereinafter referred to as "DPPA") / dipentaerythritol hexaacrylate (hereinafter, referred to as "DPPA") / dipentaerythritol pentaacrylate (hereinafter referred to as "DPPA") / dipentaerythritol pentaacrylate (hereinafter referred to as "DPPA") / dipentaerythritol pentaacrylate (hereinafter referred to as "DPPA") Known as "DPHA") mixture (a mixture with a mass ratio of 50 / 50). After the dripping is completed, react at 70°C for 3 hours, and further react until 2250 cm representing the isocyanate group -1 The infrared absorption spectrum disappeared, and a urethane acrylate (A2) / DPHA mixture (a mixture with a mass ratio of 54 / 56 and a buty...

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PUM

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Abstract

An actinic radiation curable resin composition characterized by comprising a urethane acrylate (A) which is a product of addition reaction of a polyisocyanate (a1) with an acrylate (a2) having one hydroxyl group and two or more (meth)acryloyl groups in the molecule and a polymer (B) having a (meth)acryloyl group which is obtained by reacting a (meth)acrylate polymer (b1) having a reactive functional group in the side chain with an a,ss-unsaturated compound (b2) having a functional group reactive with the reactive functional group. The composition can be cured by irradiation with an actinic radiation such as ultraviolet light to give a cured film having high hardness and high mar resistance with little cure shrinkage.

Description

Technical field [0001] The present invention relates to an active energy ray curable resin composition that can be used as an article protective layer and form a high-hardness cured coating film. Further, it relates to an article having a cured film of the composition and a molded body formed from a cured product of the resin composition. Background technique [0002] Articles, due to their mutual contact, contact with other articles, or the influence of the environment, cause external changes such as damage or deformation, or internal changes such as the deterioration of the materials constituting the article. In order to prevent these changes, it is necessary to provide a protective layer on the surface of the article or strengthen the article itself. [0003] Plastics are used in various fields due to their good processability, light weight, and low cost. However, on the other hand with good workability, it has problems such as softness and easy damage to the surface. In order...

Claims

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Application Information

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IPC IPC(8): C08F299/06
CPCC08F299/06C08J5/18C08L53/00C08L75/04C08L2203/16C09D175/16
Inventor 城所直登小池展行西泽茂年清成俊之
Owner DAINIPPON INK & CHEM INC
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