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Solventless type adhesive composition, adhesive, adhesive sheet and display body

An adhesive, solvent-free technology, applied in the direction of non-polymer organic compound adhesives, adhesive types, adhesive additives, etc., can solve problems such as air bubbles and achieve excellent anti-foaming effects

Active Publication Date: 2017-07-21
LINTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, in the method of filling the gap between the protective panel and the display module with an adhesive layer, when the protective panel is changed to a plastic sheet, air leakage from the plastic sheet occurs under high temperature and high humidity conditions, resulting in bubbles, New problems of foaming such as floating and peeling

Method used

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  • Solventless type adhesive composition, adhesive, adhesive sheet and display body
  • Solventless type adhesive composition, adhesive, adhesive sheet and display body
  • Solventless type adhesive composition, adhesive, adhesive sheet and display body

Examples

Experimental program
Comparison scheme
Effect test

manufacture example

[0122] As a production example of the adhesive sheet 1, a coating layer is formed by coating the above-mentioned solvent-free adhesive composition P on the release surface of one release sheet 12a (or 12b), and another release sheet is superimposed on the coating layer. After peeling off the surface of the sheet 12b (or 12a), the coating layer is irradiated with active energy rays and / or heat-treated to form the pressure-sensitive adhesive layer 11 .

[0123] As another production example of the adhesive sheet 1, the above-mentioned solvent-free adhesive composition P is applied to the peeling surface of one release sheet 12a (or 12b), and subjected to active energy ray irradiation and / or heat treatment to make a solvent-free adhesive composition P. After the adhesive composition P is cured to form the adhesive layer 11, the release surface of the other release sheet 12b (or 12a) is superimposed on the adhesive layer 11.

[0124] As a method of applying the coating liquid of t...

Embodiment 1

[0161] 1. Preparation of solvent-free adhesive composition

[0162] 1,6-bis(trimethoxysilyl)hexane as an organoalkoxysilane was mixed with 100 parts by mass of the liquid mixture prepared in Production Example 1 above (value in terms of solid content; the same applies hereinafter). 0.3 parts by mass and 0.5 parts by mass of 1-hydroxy-cyclohexyl-phenyl-ketone as a photopolymerization initiator to obtain a solvent-free adhesive composition.

[0163] 2. Manufacture of adhesive sheet

[0164] Using a The solvent-free adhesive composition obtained in the above step 1 was applied with a knife coater.

[0165] Next, the coating layer on the heavy release type release sheet obtained above, and the light release type release sheet (LINTEC Corporation Manufactured, product name "SP-PET382120"), and bonded in such a way that the release-treated surface of the light-release type release sheet is in contact with the coating layer.

[0166] Then, the coating layer was irradiated with ul...

Embodiment 2～4、 comparative example 1～6

[0172] As shown in Table 1, except having changed the kind of liquid mixture, and the kind and addition amount of organoalkoxysilane, it carried out similarly to Example 1, and produced the adhesive sheet. In addition, in Comparative Example 3, tris(trimethoxysilylpropyl)isocyanurate used as an organoalkoxysilane has a so-called isocyanurate ring as the main skeleton, and relative to this main The skeleton has three trimethoxysilylpropyl groups bonded at equal intervals. Therefore, this organoalkoxysilane cannot be said to be the above-mentioned organoalkoxysilane having a linear structure, and does not correspond to the organoalkoxysilane of this embodiment.

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Abstract

The invention is to provide a solventless type adhesive composition, an adhesive, an adhesive sheet and a display body capable of exhibiting excellent blister resistance. There is provided a solventless type adhesive composition containing at least one kind of polymerization component selected from a polymerizable vinyl monomer, a polymerizable vinyl prepolymer, a polyfunctional (meth)acrylate monomer and a polyfunctional (meth)acrylate oligomer and organoalkoxysilane having a linear structure and alkoxysilyl groups at both terminals, wherein at least a part of the polymerization component contains an active hydrogen group.

Description

technical field [0001] The present invention relates to a solventless adhesive composition, an adhesive, an adhesive sheet, and a display using them, which can be used for displays such as touch panels. Background technique [0002] In recent years, various mobile electronic devices such as smartphones and tablet terminals have been equipped with displays using display modules including liquid crystal elements, light-emitting diodes (LED elements), and organic electroluminescent (organic EL) elements. , the display is a touch panel. [0003] In the display as described above, a protective panel is usually provided on the front side of the display module. Here, a gap is provided between the protective panel and the display module to prevent the deformed protective panel from colliding with the display module when the protective panel is deformed by an external force. [0004] However, if there is an air layer that is a void as described above, the reflection loss of light c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J11/06G02F1/1333G06F3/041H01L27/32
CPCG02F1/13338G06F3/0412C09J11/06C09J175/14H10K59/40C09J4/00C09J7/00C09J7/40C09J2203/318
Inventor 吉延毅朗小泽祐树荒井隆行所司悟
Owner LINTEC CORP
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