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Adhesive binder, adhesive composition including the same, optical member, and a method for preparing adhesive binder layer

A binder and composition technology, applied in the direction of adhesives, polarizers, adhesive types, etc., can solve problems such as long curing time

Inactive Publication Date: 2011-09-14
CHEIL IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The latter method is a concept opposite to the general concept of light leakage prevention based on stress relief, and it has the use of a large amount of curing agent causing a drastic change with time after curing, so it takes a long time for the reaction of the curing agent after coating. curing time

Method used

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  • Adhesive binder, adhesive composition including the same, optical member, and a method for preparing adhesive binder layer
  • Adhesive binder, adhesive composition including the same, optical member, and a method for preparing adhesive binder layer
  • Adhesive binder, adhesive composition including the same, optical member, and a method for preparing adhesive binder layer

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0091] Preparation Example 1: Preparation of Adhesive A

[0092] 60 g of ethyl acetate was put into a 1-liter four-necked flask, and then 84 g of butyl acrylate, 10 g of benzyl methacrylate, and 4 g of 4-hydroxybutyl acrylate were added thereto. After heating to 70°C, 0.08 g of initiator (Vazo-52, DuPont) and 20 g of ethyl acetate were added. The mixture was kept for 3 hours. To this mixture was added 320 g of ethyl acetate. After cooling to 40° C., 2 g of 2-isocyanoethyl methacrylate and 0.01 g of DBTDL were added as catalysts. The resulting mixture was reacted for 12 hours. Nitrogen was fed to the flask at a rate of 10 cc / min throughout the reaction. The polymerized product was found to have a viscosity of 4000 to 10000 cps at 25°C and a solids content of 20%.

preparation example 2

[0093] Preparation Example 2: Preparation of Adhesive B

[0094] The procedure of Preparation Example 1 was repeated except that butyl acrylate, benzyl methacrylate, 4-hydroxybutyl acrylate, and 2-isocyanoethyl methacrylate were used in amounts of 81 g, 15 g, 3 g, and 1 g, respectively.

preparation example 3

[0095] Preparation Example 3: Preparation of Adhesive C

[0096] The procedure of Preparation 1 was repeated except that butyl acrylate, benzyl methacrylate, and 4-hydroxybutyl acrylate were used in amounts of 86 g, 10 g, and 4 g, respectively, instead of 2-isocyanoethyl methacrylate .

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Abstract

An adhesive binder, an adhesive composition including the same, a method for preparing the adhesive, an optical member including the optical film, and a method for forming an adhesive binder layer, the adhesive binder including a (meth)acrylic copolymer having urethane, hydroxyl, aromatic, and vinyl groups in side chains thereof. The adhesive composition is endurable in the high-temperature and high-humidity condition. Additionally, the adhesive composition is used for reducing the time of solidifying and preventing the frequent light leakage in the polarization film.

Description

technical field [0001] The present invention relates to an adhesive, a method for preparing the adhesive, an adhesive composition including the adhesive, and an optical element using the adhesive. More specifically, the present invention relates to a binder, a method for preparing the binder, a binder composition including the binder, and an optical element using the binder, the binder being used in its side chain Copolymers with specific functional groups are added to reduce the time required for curing and prevent light leakage, which is a frequent phenomenon in polarizing films, while maintaining good durability under high-temperature and high-humidity conditions. Background technique [0002] Optical films such as polarizers, color filters, retardation films, elliptical polarization films, reflective films, anti-reflective films, compensation films, brightness enhancement films, orientation films, light diffusion films, shockproof films, surface protection films, plastic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J133/10C08F220/18C08F220/28C08F220/36G02B5/30
CPCC09J175/16C08G18/8108C08F2220/1825C09J133/14C08F8/30C08G18/6229C08F220/1804C08F220/1807C08F220/20C09J11/00C09J133/04C09J2203/318C09J7/22C09J7/385C09J2301/302C09J2301/40C09J2301/416Y10T428/28Y10T428/2848
Inventor 河京珍李吉成金美善伊琳娜·南李昌珉
Owner CHEIL IND INC
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