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Pressure sensitive adhesion bonding agent compound, pressure sensitive adhesion bonding agent, pressure sensitive adhesion bonding sheet and display body

A pressure-sensitive adhesive and adhesive technology, applied in the direction of adhesive types, pressure-sensitive films/sheets, ester copolymer adhesives, etc., can solve problems such as durability conditions, bubbles, peeling, etc., to achieve Excellent step followability and excellent anti-foaming effect

Active Publication Date: 2018-04-06
LINTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the storage modulus (G') at room temperature is reduced as described above, the storage modulus (G') at high temperature will decrease too much, and problems will occur under durable conditions.
For example, when high-temperature and high-humidity conditions are applied, air bubbles will be generated near the level difference, or outgassing (out gas) will occur from the plastic plate as the protective panel, causing bubbles, floating, peeling, etc. Bubble problems
On the other hand, if the pressure-sensitive adhesive layer is hardened in order to improve the anti-foaming property, the step followability will be reduced

Method used

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  • Pressure sensitive adhesion bonding agent compound, pressure sensitive adhesion bonding agent, pressure sensitive adhesion bonding sheet and display body
  • Pressure sensitive adhesion bonding agent compound, pressure sensitive adhesion bonding agent, pressure sensitive adhesion bonding sheet and display body
  • Pressure sensitive adhesion bonding agent compound, pressure sensitive adhesion bonding agent, pressure sensitive adhesion bonding sheet and display body

Examples

Experimental program
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Effect test

preparation example Construction

[0099] (2) Preparation of pressure-sensitive adhesive adhesive composition

[0100] The pressure-sensitive adhesive composition P can be obtained by mixing a radical polymerizable component (A), an ion polymerizable component (B), a visible light-activated radical polymerization initiator (C), and an ultraviolet-ray activated ion polymerization initiator ( D) at the same time, according to the need to add additives and prepare.

[0101] Here, when a (meth)acryloyl group-containing monomer or a vinyl group-containing monomer is used as the radically polymerizable component (A), since its molecular weight is relatively small and its viscosity is low, it can be used without a solvent. Mix the ingredients. This pressure-sensitive adhesive composition P can be used as a coating liquid as it is, as a solventless pressure-sensitive adhesive composition.

[0102] [Pressure Sensitive Adhesive Adhesives]

[0103] The pressure-sensitive adhesive of the present embodiment is obtained b...

Embodiment 1

[0157] 1. Preparation of urethane acrylate oligomers

[0158] 1 mole of polypropylene glycol (PPG) with a weight-average molecular weight of 9,200, 2 moles of isophorone diisocyanate (IPDI), and 2 moles of 2-hydroxyethyl acrylate (HEA) were polymerized to obtain urethane acrylate oligomers Polyether urethane acrylate with a weight average molecular weight of 9,900.

[0159] In addition, the weight-average molecular weights of polypropylene glycol and polyether urethane acrylate are values ​​converted to standard polystyrene measured under the following conditions by gel permeation chromatography (GPC).

[0160] ・GPC measuring device: HLC-8020 manufactured by Tosoh Co., Ltd.

[0161] ・GPC column: manufactured by Tosoh Co., Ltd. (hereinafter, described in order of passage)

[0162] TSK guard column HXL-H

[0163] TSK ge1 GMHXL (×2)

[0164] TSK ge1 G2000HXL

[0165] ·Determination solvent: tetrahydrofuran

[0166] ·Measurement temperature: 40℃

[0167] 2. Preparation of P...

Embodiment 2

[0181] Except having changed the compounding quantity of the ionically polymerizable component (B) into 5 mass parts, it carried out similarly to Example 1, and produced the pressure-sensitive adhesive adhesive sheet.

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Abstract

The invention provides a pressure sensitive adhesion bonding agent compound, pressure sensitive adhesion bonding agent, pressure sensitive adhesion bonding sheet and display body having good segment gap pursuit performance and good foaming resistance and manufacture methods for the pressure sensitive adhesion bonding agent compound, pressure sensitive adhesion bonding agent, pressure sensitive adhesion bonding sheet and display body having good segment gap pursuit performance and good foaming resistance. The pressure sensitive adhesion bonding agent compound contains a free radical polymer component A, an ion polymer component B, visible light active free radical polymer triggering agent C performing activation through visible light and ultraviolet light activation ion polymerization triggering agent D performing activation through ultraviolet light.

Description

technical field [0001] The present invention relates to a pressure-sensitive adhesive composition suitable for laminating components of a display body, a pressure-sensitive adhesive adhesive, a pressure-sensitive adhesive sheet, and a display manufactured using them; and A pressure-sensitive adhesive adhesive, a pressure-sensitive adhesive sheet, and a method for producing a display body. Background technique [0002] In recent years, various mobile electronic devices such as smartphones and tablet PCs have been equipped with displays using display modules such as liquid crystal elements, light-emitting diodes (LED elements), and organic electroluminescence (organic EL) elements. Displays are increasingly being used as touch panels. [0003] In the display as described above, generally, a protective panel is provided on the front side of the display module. Along with the reduction in thickness and weight of electronic equipment, the above-mentioned protective panels have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J7/38G09F9/30
CPCG09F9/30C09J7/00C09J133/08C09J2467/005C09J2203/318C09J2203/326C09J2301/302C09J7/29C09J7/40C09J201/02B32B7/12B32B37/12B32B38/0008B32B2457/20B32B2310/0831
Inventor 吉延毅朗荒井隆行大类知生所司悟
Owner LINTEC CORP
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