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Adhesive composition comprising ionic antistatic agent

A technology of antistatic agent and composition, which is applied in the field of adhesive composition, and can solve problems such as bleeding, excessive antistatic performance, and reduced durability

Active Publication Date: 2019-04-09
DONGWOO FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For example, in the case where an antistatic agent containing polyether polyol and alkali metal salt is added to an acrylic adhesive, bleeding of the antistatic agent occurs, the durability of the adhesive is significantly reduced after curing, and when applied to a protective film, there is a high temperature The problem of oozing out and contaminating the adherend is prone to occur under certain conditions
[0005] In addition, there is a method of adding one or more surfactants to the adhesive and transferring the surfactant to the adherend to implement an antistatic function, but in this case, the surfactant is likely to bleed out to the surface of the adhesive , when applied to a protective film, there is a problem of possible contamination of the adherend
[0006] Korean Laid-Open Patent No. 2010-0016163 relates to an optically transparent pressure-sensitive adhesive composition for preventing static electricity, which uses an antistatic agent containing a fluorine-containing organic salt as an ionic salt, but there is Problems requiring excess antistatic agent to ensure adequate antistatic properties
[0007] In addition, Korean Laid-Open Patent No. 2011-0136760 discloses a method of introducing a functional group excellent in compatibility with an antistatic agent into a monomer of an adhesive composition in order to suppress bleeding of an antistatic agent, but it does not solve the The problem of reduced durability under high humidity conditions

Method used

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  • Adhesive composition comprising ionic antistatic agent
  • Adhesive composition comprising ionic antistatic agent
  • Adhesive composition comprising ionic antistatic agent

Examples

Experimental program
Comparison scheme
Effect test

manufacture example

[0112] Production example: Production of acrylic copolymer

[0113] Into a 1L reactor with refluxing nitrogen gas and equipped with a cooling device in a way that can easily adjust the temperature, was charged with 90 parts by weight of n-butyl acrylate, 7 parts by weight of methacrylate, and 2 parts by weight of 2-hydroxyethyl acrylate. , 1 part by weight of acrylic acid monomer mixture, and then put in 100 parts by weight of ethyl acetate as a solvent. After that, it was purged with nitrogen for 1 hour to remove oxygen, and then maintained at 62°C. After the above mixture was uniformly mixed, 0.07 parts by weight of azobisisobutyronitrile (AIBN) as a reaction initiator was added and reacted for 8 hours to produce an acrylic copolymer (weight average molecular weight approximately 1,000,000).

Embodiment

[0115] (1) Manufacturing of adhesive composition

[0116] An adhesive composition having the composition and content described in Table 1 below was produced.

[0117] (2) Manufacturing of adhesive sheet

[0118] After the adhesive composition is manufactured, it is applied to a film coated with a silicon release agent and dried at 100°C for 1 minute to form an adhesive layer of 25 μm.

[0119] Then, the release film was laminated on the adhesive layer to produce an adhesive sheet.

[0120] (3) Manufacturing of polarizing plate with adhesive

[0121] After the release film of the produced adhesive sheet was peeled off, the adhesive layer was laminated on an iodine-based polarizing plate containing a TAC protective film with a thickness of 185 μm to produce an adhesive-attached polarizing plate.

[0122] [Table 1]

[0123]

[0124]

[0125]

experiment example

[0127] The adhesive compositions of the Examples and Comparative Examples were applied to a release film coated with a silicon release agent so that the thickness after curing was 25 μm, and dried at 100° C. for 1 minute to form an adhesive layer.

[0128] After that, the adhesive layer produced as described above was laminated on both sides of an iodine-based polarizing film (total thickness of 185 μm) to which triacetyl cellulose-based protective films were bonded by an adhesive process to produce a polarizing plate. The manufactured polarizing plate was stored under the conditions of 23°C and 60% RH for 7 days.

[0129] (1) Heat resistance evaluation

[0130] The release film of the polarizing plate manufactured above was removed and joined to Corning Glass. After autoclave treatment, it was placed at a temperature of 60°C for 300 hours, and then the occurrence of bubbles or peeling was observed and evaluated. The evaluation was carried out after the above heat treatment and befo...

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PUM

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Abstract

The present invention relates to an adhesive composition comprising an ionic antistatic agent. In more detail, it relates to an adhesive composition that can exhibit excellent antistatic performance and exhibit remarkably improved durability by including an acrylic copolymer, a crosslinking agent, and an ionic antistatic agent represented by Chemical Formula 1. It also maintains excellent adhesion even under harsh conditions such as high temperature and high humidity, and can ensure sufficient antistatic properties even if it is added in a small amount.

Description

Technical field [0001] The present invention relates to an adhesive composition containing an ionic antistatic agent. Background technique [0002] The image display device is composed of a liquid crystal cell containing liquid crystal and a polarizing plate, which are mainly joined by forming an adhesive layer on one surface of the polarizing plate. In addition, in order to improve the function of the image display device, a surface protection film such as a phase difference plate and a wide viewing angle compensation plate is attached to the polarizing plate using an adhesive or the like. [0003] Since optical components such as surface protection films and polarizing plates are made of plastic materials, static electricity is generated when they are peeled or rubbed. In this case, if a voltage is applied to the liquid crystal in a state where static electricity remains, defects such as defects in the panel or damage to the alignment of the liquid crystal molecules may occur. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J9/02C09J11/02C09J133/06C09J7/10
CPCC09J133/06C09J133/02C08L2312/00C09J9/00C09J7/10C09J2301/408C09J2301/414B32B7/12B32B2307/42C08K5/19C08K5/3432C08K5/3445C08K5/372C08K5/41C08K5/50C08K5/55C08K2201/017C09J11/06C09J133/066C09J2433/00
Inventor 崔汉永
Owner DONGWOO FINE CHEM CO LTD
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