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Adhesive composition and optical member using the same

一种光学元件、组合物的技术，应用在非高分子粘合剂添加剂、粘合剂类型、黏合剂添加剂等方向，能够解决长老化时间等问题

Active Publication Date: 2012-07-04
CHEIL IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, acrylic adhesives need to be processed through adhesives that mix acrylic polymers and curing agents, and require long aging times until the crosslinking reaction is complete and the adhesive properties are stabilized

Method used

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  • Adhesive composition and optical member using the same
  • Adhesive composition and optical member using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 5 and comparative example 1 and 2

[0074] The components were mixed according to the composition listed in Table 1, ethyl acetate was added thereto to a concentration of 15%, and uniformly stirred for 20 minutes, thereby preparing a solution. The prepared solution was deposited on a PET release film (MRF38, thickness: 38 μm, Mitsubishi Polyester Film Inc.) to a dry thickness of 25 μm. Then, the solution deposited on the release film was dried in a drying oven at 120° C. for 3 minutes. The dried adhesive layer was deposited on the wide viewing angle coating of the polarizing plate coated with the wide viewing angle liquid crystal layer, and left in a constant temperature and humidity chamber (35° C., 45% RH) for 1 day.

[0075] Table 1

[0076]

[0077] Evaluation of Physical Properties

[0078] (1) Light leakage resistance

[0079] After the release film was separated from each prepared adhesive sheet, the adhesive sheet was attached to an iodine polarizing plate having a thickness of 185 μm. The polariz...

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Abstract

The invention discloses an adhesive composition, including (A) an acrylic resin; an isocyanate cross-linking agent (B); and a carbodiimide cross-linking agent (C), wherein the adhesive composition exhibits a creeping distance of about 100 [mu]m or less when the composition attached to a glass substrate with a bonding area of about 1.5 cm*1.5 cm is left at about 22 DEG C. and about 50% RH for about 3 days and is subjected to a load of about 10 gf / mm2 for about 1,000 seconds, and a storage modulus of about 1*105 to about 1*107 Pa at about 10 Hz and about 30 DEG C. under conditions in which a sample has a thickness of about 1 mm and an elongation of about 10%. The adhesive composition is provided with excellent heat resistance and light leakage resistance, and prevention of separation or foaming at the end part. The invention also discloses an optical member comprising the adhesive composition.

Description

technical field [0001] The present invention relates to an adhesive composition and an optical element using the adhesive composition. More particularly, the present invention relates to an adhesive composition comprising two crosslinking agents to form a compact crosslinking agent in a heat-curing system in a relatively short period of time and an optical element using the same. The cross-linked structure has a creeping distance of about 100 μm or less and excellent light leakage control ability at room temperature. Background technique [0002] Optical films include polarizing plates, color filters, phase retardation films, elliptically polarizing films, reflective films, antireflection films, compensation films, brightness enhancement films, orientation films, light diffusion films, glass Anti-scattering film, surface protection film, plastic LCD substrate, etc. [0003] Specifically, the polarizing plate includes an iodine compound or a dichroic material oriented in on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J133/10C09J11/06G02B5/30C09J7/22C09J7/38
CPCC09J2203/318C08K5/29C08K2201/014C08K5/0025C09J7/0246C09J2433/00C09J2205/102C09J7/38C09J7/22Y10T428/2891Y10T428/2848C09J2301/408C08F220/1804C08F220/06C08F220/20
Inventor 奇喜莲郑宇镇
Owner CHEIL IND INC
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