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Adhesive composition

A technology for pressure-sensitive adhesives and compositions, applied in the direction of adhesive types, ester copolymer adhesives, adhesives, etc., can solve problems such as short life, and achieve the effect of no deterioration of optical properties and excellent durability

Inactive Publication Date: 2020-08-11
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The RGB method can be applied to POLED (Plastic OLED), which has a problem that the lifetime is shorter than that of the WOLED method

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0132] Preparation of pressure sensitive adhesive composition

[0133] n-Butyl acrylate (n-BA) and 4-hydroxybutyl acrylate (4-HBA) were introduced at a weight ratio of 99:1 (n-BA:4-HBA) into a 1 L reactor with reflux Nitrogen and equipped with a cooling device for easy temperature adjustment. Subsequently, ethyl acetate (EAc) as a solvent was introduced into the reactor at a ratio of 180 parts by weight to the sum of n-butyl acrylate and 4-hydroxybutyl acrylate to 100 parts by weight, and nitrogen was purged for 60 minutes to Oxygen is removed. Thereafter, while maintaining the temperature at 67° C., AIBN (azobisisobutyl Nitrile), then reacted for 8 hours. After the reaction, the reaction product was diluted with ethyl acetate to obtain an acrylic polymer having a solid content concentration of 30% by weight and a weight average molecular weight of 1,000,000.

[0134] With respect to 100 parts by weight of the solid content of the acrylic polymer, about 4 parts by weight o...

Embodiment 2

[0142] A pressure-sensitive adhesive composition, a pressure-sensitive adhesive layer, and a polarizing plate were sequentially produced in the same manner as in Example 1, except that, when preparing the pressure-sensitive adhesive composition, with respect to 100 parts by weight The solid content of the acrylic polymer is changed to a ratio of about 3.5 parts by weight of the ultraviolet absorber of formula A.

Embodiment 3

[0144] A pressure-sensitive adhesive composition, a pressure-sensitive adhesive layer, and a polarizing plate were sequentially produced in the same manner as in Example 1, except that, when preparing the pressure-sensitive adhesive composition, with respect to 100 parts by weight The solid content of the acrylic polymer is changed to a ratio of about 3 parts by weight of the ultraviolet absorber of formula A.

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Abstract

The present application relates to an adhesive composition and a use thereof. A polarizing plate to which the adhesive composition of the present application is applied has, when attached to an organic light-emitting panel, and in particular, to an organic light-emitting panel including a plastic substrate, a particularly excellent advantage in terms of the ability to block blue light, for example, light in a wavelength range of 380 nm or greater.

Description

technical field [0001] This application claims the benefit of the filing date of Korean Patent Application No. 10-2018-0065024 filed with the Korean Intellectual Property Office on June 5, 2018, the disclosure of which is incorporated herein by reference in its entirety. [0002] The present application relates to pressure sensitive adhesive compositions and uses thereof. Background technique [0003] As a method for realizing RGB (Red, Green, Blue) colors in OLED (Organic Light Emitting Display), a method of applying a color filter to a white OLED light source (WOLED method) or a method of composing RGB colors with light emitting elements separately (RGB method), etc. The RGB method can be applied to POLED (Plastic OLED), which has a problem that the lifetime is shorter than that of the WOLED method. The lifetime of the blue light source among the RGB light sources is relatively short, and the lifetime of the blue light source may be shortened due to sunlight incident fro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J133/10C09J11/06G02B5/30H01L51/50
CPCC09J133/10G02B5/30C09J133/08C09J11/06C09J133/066H10K59/8791C08K5/005C08K5/315C08K5/3462G02B5/3041C09J7/385G02B5/3025B32B2457/206C09K2323/05C09K2323/057H10K50/86
Inventor 尹夏松卢承周孙贤喜
Owner LG CHEM LTD
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