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Urethane (METH)acrylate resin and laminated film

A urethane and acrylate technology, used in synthetic resin layered products, coatings, layered products, etc., can solve the problems of easy curling, cracking, insufficient coating film toughness and softness, etc. The effects of excellent curling, excellent impact resistance, and excellent scratch resistance

Pending Publication Date: 2019-02-05
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the resin composition described in Patent Document 1 has high surface hardness and excellent scratch resistance, the cured product is prone to curling, and the toughness and flexibility of the coating film are not sufficient, so it is easy to cause scratches due to external impact. rupture

Method used

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  • Urethane (METH)acrylate resin and laminated film
  • Urethane (METH)acrylate resin and laminated film
  • Urethane (METH)acrylate resin and laminated film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0203] Hereinafter, the present invention will be described more concretely by giving specific production examples and examples, but the present invention is not limited by these examples. Parts and % in examples are all based on mass unless otherwise stated.

[0204] In addition, in this Example, weight average molecular weight (Mw) is the value measured under the following conditions using gel permeation chromatography (GPC).

[0205] Measuring device: HLC-8220 manufactured by Tosoh Corporation

[0206] Column: guard column H manufactured by Tosoh Corporation XL -H

[0207] +TSKgel G5000HXL manufactured by Tosoh Corporation

[0208] +TSKgel G4000HXL manufactured by Tosoh Corporation

[0209] +TSKgel G3000HXL manufactured by Tosoh Corporation

[0210] +TSKgel G2000HXL manufactured by Tosoh Corporation

[0211] Detector: RI (differential refractometer)

[0212] Data processing: SC-8010 manufactured by Tosoh Corporation

[0213] Determination conditions: column temperat...

manufacture example 1 2

[0230] Production example 1 Production of dipentaerythritol polyacrylate (B1) crude product

[0231]Into a flask equipped with a thermometer, a stirrer, and a condenser, 300 g of acrylic acid, 180 g of dipentaerythritol, 15 g of sulfuric acid, 1.5 g of copper chloride, and 300 g of toluene were charged. The temperature was raised to 105° C. while stirring, and the reaction was carried out at the same temperature for 12 hours while refluxing in the system. The produced water was 68.5 g. 425 g of toluene was added to the reaction mixture, followed by washing with 200 g of distilled water. Furthermore, 20% sodium hydroxide aqueous solution was added, the reaction mixture was neutralized, and it wash|cleaned with 100 g of distilled water. After adding hydroquinone monomethyl ether in an amount of 500 ppm with respect to resin solid content, toluene was distilled off, and dipentaerythritol poly(meth)acrylate (B1) was obtained. The hydroxyl value of the crude product of dipentaer...

manufacture example 2～4 2

[0232] Production Examples 2-4 Production of Dipentaerythritol Polyacrylate (B2)-(B4) Crude Products

[0233] Except having changed the input-amount and reaction time of acrylic acid like Table 1, it carried out similarly to manufacture example 1, and obtained the dipentaerythritol polyacrylate (B2)-(B4) crude product. The hydroxyl value of the dipentaerythritol polyacrylate (B2) to (B4) crude product, the content of each component calculated from the area ratio of the liquid chromatogram, and the dipentaerythritol polyacrylate (B2) calculated from the content ratio of each component Table 1 shows the hydroxyl value of ~ (B4).

[0234] [Table 1]

[0235] Table 1

[0236]

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Abstract

Provided are a urethane (meth)acrylate resin, the cured coating film of which has various excellent properties such as scratch resistance, curl resistance, flexibility, and impact resistance, a curable composition and cured product thereof containing the same, and a laminated film. A urethane (meth)acrylate resin having as essential reaction raw materials a polyisocyanate compound (A) having an aromatic ring or alicyclic structure in the molecule and a dipentaerythritol (meth)acrylate (B), a curable composition and cured product thereof containing the same, and a laminated film.

Description

technical field [0001] The present invention relates to a urethane (meth)acrylate resin excellent in properties such as scratch resistance, curl resistance, flexibility, and impact resistance of a cured coating film, a curable composition containing the same, and a cured product thereof , and laminated films. Background technique [0002] Plastic films made of polyethylene terephthalate resin (PET), acrylic resin, polycarbonate resin, acetylated cellulose resin, etc. are often used as protective films for polarizers and touch panels incorporated in flat panel displays In industrial applications such as surface protection films. In the case of these plastic films alone, there are performance deficiencies such as easy scratches on the surface, low processability, and easy formation of cracks and cracks. Therefore, coating layers made of active energy ray-curable resins, etc. used to complement these properties. [0003] As a coating agent for plastic film reinforcement, for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/67B32B27/30C08F20/28C08F299/06C08J7/04C08J7/043C08J7/046
CPCB32B27/30C08F20/28C08G18/67C08F299/06C08J7/046C08J7/043B32B27/08C08G18/755C08G18/7621C08F220/343
Inventor 井上直人伊藤正广
Owner DIC CORP
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