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Curable resin composition for interlayer filling

A curable composition, active energy ray technology, applied in non-polymer organic compound adhesives, synthetic resin layered products, coatings, etc., can solve the problem of inability to achieve large-scale manufacturing, insufficient interlayer fillers , the shape change of the cured coating film, etc., to achieve the effect of not easy to change the hue and shape, good wettability, and preventing light scattering

Active Publication Date: 2020-04-21
DAICEL ALLNEX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] However, the urethane (meth)acrylates and compositions containing them described in these prior art documents are insufficient as interlayer fillers for transparent substrates for displays due to the following disadvantages, The disadvantages include: large-scale production cannot be achieved due to increased viscosity when synthesizing urethane (meth)acrylate; the resulting urethane (meth)acrylate or Their compositions become cloudy at low temperatures, resulting in decreased transparency; cured coating films undergo shape changes at high temperatures; etc.

Method used

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  • Curable resin composition for interlayer filling
  • Curable resin composition for interlayer filling
  • Curable resin composition for interlayer filling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0147] Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited by these examples at all.

[0148]

[0149] The measurement methods, test methods, and evaluation methods of physical properties are as follows.

[0150] (weight average molecular weight)

[0151] The weight-average molecular weight was determined by GPC (gel permeation gas chromatography) on the basis of standard polystyrene under the following measurement conditions.

[0152] Equipment used: TOSO HLC-8220GPC

[0153] Pump: DP-8020

[0154] Detector: RI-8020

[0155] Column type: Super HZM-M, Super HZ4000, Super HZ3000, Super HZ2000

[0156] Solvent: THF

[0157] Phase flow: 1mL / min

[0158] Column pressure: 5.0MPa

[0159] Column temperature: 40°C

[0160] Sample injection volume: 10μL

[0161] Sample concentration: 0.2mg / mL

[0162] [Appearance test of resin composition before curing (resin appearance)]

[0163] The app...

Synthetic example

[0200] Hereinafter, synthesis examples and examples of urethane (meth)acrylate (X) will be described.

[0201] (Determination of isocyanate group concentration)

[0202] The isocyanate group concentration was measured as described below. It should be noted that the measurement was performed in a 100 mL glass flask under stirring with a stirring bar.

[0203] (determination of blank value)

[0204] Add 15 mL of a THF solution (0.1 N) of dibutylamine to 15 mL of THF, and further add 3 drops of bromophenol blue (1% methanol dilution) to make the color blue, and then use an aqueous solution of HCl with an equivalent concentration of 0.1 N to Titration was performed. Let the titration amount of the aqueous HCl solution at the time when discoloration is observed be V b (mL).

[0205] (Measurement of measured isocyanate group concentration)

[0206] Weigh the sample W s (g) was dissolved in 15 mL of THF, and 15 mL of a THF solution (0.1 N) of dibutylamine was added. After con...

Synthetic example 1

[0237] A separable flask equipped with a thermometer and a stirring device was filled with 269.1 g of P3000 as polyol (A), 1.5 g of TMP as alcohol (B), 800 ppm of dibutylhydroxytoluene (BHT), 128.5 g of NOA (30% by weight) of acrylate (Y). After making internal temperature 70 degreeC, stirring for 1 hour, and making the inside of a system uniform, it cooled to 50 degreeC again, and injected 24.7 g of IPDI which is a diisocyanate (C). After making the system uniform, 300 ppm of dibutyltin dilaurate (DBTDL) was added. After stirring at the reaction temperature for 1 hour, the temperature was raised to 70° C., and the reaction was continued.

[0238] It should be noted that the completion of the reaction is based on the fact that the isocyanate group concentration in the reaction liquid reaches the remaining isocyanate group concentration when all the hydroxyl groups supplied to the reaction are carbamate-formed (hereinafter referred to as "theoretical end point isocyanate group...

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Abstract

The present invention provides an active energy ray-curable composition suitable for interlayer filling that has excellent wettability with plastics and glass, and is not accompanied by changes in appearance such as discoloration and deformation even under high temperature and high humidity. The said active energy ray curable composition contains a specific urethane (meth)acrylate (X), a monofunctional (meth)acrylate (Y), and a photoinitiator (Z). The active energy ray-curable composition of the present invention can form a cured product layer as a filler between transparent substrates 2 and 3 in liquid crystal televisions, displays for electronic paper, personal computers, and displays for mobile phones shown in FIG. 1 , The cured material layer 1 can be used.

Description

technical field [0001] The present invention relates to an active energy ray-curable composition usable as an interlayer filler for transparent substrates for displays such as personal computers, televisions, and mobile phones, and to a laminate having a cured product layer of the active energy ray-curable composition body. This application claims priority based on Japanese Patent Application No. 2015-078067 for which it applied in Japan on April 6, 2015, and uses the content here. Background technique [0002] Displays that have been used in personal computers, navigators, televisions, mobile phones, etc. project images using light from a backlight. Displays include color filters, and various transparent substrates such as glass substrates such as glass plates and plastic substrates such as plastic films have been used. Due to the influence of light scattering and absorption of these transparent substrates, the The amount of light output from the outside of the monitor is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F290/06B32B17/10B32B27/40C09J4/00C09J11/06C09J175/16
CPCB32B17/10B32B27/40C08F290/06C09J4/00C09J11/06C09J175/16B32B7/12C08F290/067C08G18/10C08G18/672C08G18/69C09D175/16C09J9/00
Inventor 相模贵雄山下亮
Owner DAICEL ALLNEX
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