Adhesive composition for acrylic-based or cycloolefin-based polarizing film, adhesive layer, acrylic-based or cycloolefin-based polarizing film having adhesive layer, and image formation device

An acrylic and adhesive layer technology, which is applied in the direction of film/sheet adhesive, non-polymer adhesive additives, adhesive types, etc., can solve the effect of liquid crystal orientation on liquid crystal display devices, and the effect of small static electricity Excellent antistatic function, excellent humidification durability, and excellent foaming resistance can be achieved without problems such as generation and defects.

Inactive Publication Date: 2015-10-14
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The static electricity generated in this way will affect the alignment of the liquid crystal inside the liquid crystal display device, causing malfunctions
In addition, when using a liquid crystal display device, display unevenness due to static electricity may occur
The generation of static electricity can be suppressed, for example, by forming an antistatic layer on the outer surface of the polarizing film, but there is a problem that the effect is small and the generation of static electricity cannot be fundamentally prevented.

Method used

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  • Adhesive composition for acrylic-based or cycloolefin-based polarizing film, adhesive layer, acrylic-based or cycloolefin-based polarizing film having adhesive layer, and image formation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0156] The following examples illustrate the present invention in detail, but the present invention is not limited by these examples. In addition, the parts and % in each example are based on weight.

[0157]

[0158] The weight-average molecular weight of the hydroxyl group-containing (meth)acrylic polymer (A) is measured by GPC (gel permeation chromatography).

[0159] ・Analyzer: HLC-8120GPC manufactured by Tosoh Corporation

[0160] ・Pillar: G7000H manufactured by Tosoh Corporation XL +GMH XL +GMH XL

[0161] · Column size: each Total 90cm

[0162] ·Column temperature: 40℃

[0163] ·Flow: 0.8ml / min

[0164] ·Injection volume: 100μl

[0165] ·Eluent: tetrahydrofuran

[0166] Detector: Differential refractometer (RI)

[0167] ·Standard sample: polystyrene

[0168]

[0169] A polyvinyl alcohol film having a thickness of 80 μm was stretched 3 times while being dyed in a 0.3% iodine solution at 30° C. for 1 minute between rollers having different speed ratios. ...

manufacture example 1

[0175]

[0176] In a reaction vessel equipped with a condenser tube, a nitrogen gas introduction tube, a thermometer, and a stirring device, 97 parts of butyl acrylate, 3 parts of 4-hydroxybutyl acrylate (HBA) and a relative monomer as an initiator were added together with ethyl acetate. (Solid content) 100 parts of 1 part of AIBN was reacted at 60° C. for 7 hours under a nitrogen stream, and ethyl acetate was added to the reaction solution to obtain a hydroxyl-containing ( A solution (solid content concentration: 30% by weight) of a meth)acrylic polymer (A-1).

manufacture example 2

[0178]

[0179] In Production Example 1, except that a monomer mixture containing 97 parts of butyl acrylate and 3 parts of 2-hydroxyethyl acrylate (HEA) was used as the monomer mixture, a compound having a weight average molecular weight of 170 was prepared in the same manner as in Production Example 1. A solution of a hydroxyl-containing (meth)acrylic polymer (A-2).

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PUM

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Abstract

Provided are: an adhesive composition that is for an acrylic-based or cycloolefin-based polarizing film, can form an adhesive layer having superior primary characteristics such as durability, and in particular has superior humidity durability of an antistatic function; an adhesive layer; and an acrylic-based or cycloolefin-based polarizing film having an adhesive layer. The adhesive composition for an acrylic-based or cycloolefin-based polarizing film contains a (meth)acrylic polymer (A) and an ionic compound (B) having an anionic component and a cationic component, and is characterized by the (meth)acrylic polymer (A) being a hydroxyl-group-containing (meth)acrylic polymer (A) containing a hydroxyl-group-containing monomer as a monomer unit, and the anionic component being an anionic component having an organic group and having at least two carbon atoms.

Description

technical field [0001] The present invention relates to an adhesive composition for an acrylic or cycloolefin polarizing film excellent in antistatic function, an adhesive layer formed from the adhesive composition, and an adhesive with adhesive having the adhesive layer layer acrylic or cycloolefin polarizing film. Furthermore, the present invention relates to image display devices such as liquid crystal display devices, organic EL display devices, and PDPs using the polarizing film with an adhesive layer. Background technique [0002] In liquid crystal display devices and the like, polarizing elements are arranged on both sides of a liquid crystal cell, and polarizing films are generally adhered to them, which is indispensable in terms of image forming methods. And when adhering the polarizing film to a liquid crystal cell, an adhesive is generally used. In addition, in bonding the polarizing film and the liquid crystal cell, in order to reduce the loss of light, an adhe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/14C09J7/02C09J11/06G02B5/30H01L51/50H05B33/02C09J7/22C09J7/38
CPCG02B5/3025C09J133/066C08K5/0075C08K5/435C09J2203/318C09J2423/006C09J2433/006C09J133/14C09J7/38C09J7/22Y10T428/266Y10T428/2848C08K5/43C08K5/5435C09J2433/00C09J2301/408C09J2301/302C09J9/00C09J11/06C09J133/08
Inventor 保井淳外山雄祐木村智之佐竹正之
Owner NITTO DENKO CORP
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