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Optical adhesive film, apparatus including the same, and optical adhesive composition

A technology of optical adhesives and compositions, applied in the direction of adhesive types, polyurea/polyurethane adhesives, film/sheet adhesives, etc., can solve the problem that materials can no longer be used

Active Publication Date: 2012-07-18
CHEIL IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If reprocessing fails or is not possible, significant time is required to remove cured resin and these materials cannot be reused

Method used

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  • Optical adhesive film, apparatus including the same, and optical adhesive composition
  • Optical adhesive film, apparatus including the same, and optical adhesive composition
  • Optical adhesive film, apparatus including the same, and optical adhesive composition

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0073] Preparation Example 1: Preparation of Polyurethane (meth)acrylate Copolymer

[0074] 80 g of polypropylene glycol and 10 g of 1,4-butanediol were placed in a 2L four-necked flask, which was equipped with a reflux cooling system on one side, a thermometer on the other side, and a dropping funnel on the third side. The solution in the flask was heated to 60° C., and 1.3 g of dibutyltin dilaurate (DBTDL) dissolved in toluene at a concentration of 10% was added thereto. 6 g of isophorone diisocyanate and 0.7 g of hexamethylene diisocyanate cyclic trimer (HDI trimer, DESMODUR N-330, Bayer) were sequentially added to the flask, and reacted at 75°C. After the disappearance of the residual isocyanate was confirmed by IR, the flask was cooled to 50° C., and 1 g of 2-methacryloyloxyethyl isocyanate (MOI) was added thereto. The flask was kept at 50° C. for 2 hours, and then the disappearance of the residual isocyanate was confirmed by IR, whereby a urethane (meth)acrylate copolym...

preparation example 2

[0075] Preparation example 2: the preparation of polyurethane (meth)acrylate copolymer

[0076] 89.45g of polypropylene glycol was placed in a 2L four-neck flask, one side of the flask was equipped with a reflux cooling system, the other side was equipped with a thermometer, and the third side was equipped with a dropping funnel. The solution in the flask was heated to 60° C., and 1.3 g of dibutyltin dilaurate (DBTDL) dissolved in toluene at a concentration of 10% was added thereto. 9.15 g of isophorone diisocyanate and 0.7 g of hexamethylene diisocyanate cyclic trimer (HDI trimer, DESMODUR N-330, Bayer) were sequentially added to the flask, and reacted at 75°C. When the theoretical NCO% was reached after 3 hours of reaction, the flask was cooled to 60° C., and 3.37 g of 2-hydroxyethyl acrylate was added thereto. The flask was kept at 60° C. for 2 hours, and then the disappearance of the residual isocyanate was confirmed by IR, whereby a urethane (meth)acrylate copolymer was ...

Embodiment 1 to 3

[0083] Examples 1 to 3: Preparation of Optical Adhesive Compositions

[0084] Optical adhesive compositions were prepared by mixing the components according to the composition listed in Table 1 and stirring the mixture for 1 hour or more.

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Abstract

The invention provides an optical adhesive film for an OCA film, an optical adhesive composition for the adhesive film and apparatus including the same. In the concrete, The invention provides an optical adhesive film for an OCA film and an optical adhesive composition for the adhesive. The optical adhesive film includes a urethane (meth)acrylate copolymer to improve retreatment and solve bubble generation and increasing cost of manufacture.

Description

technical field [0001] The present invention relates to an optical adhesive film for an OCA film, a composition for the optical adhesive film, and a device including the adhesive film. Background technique [0002] As the market for touchscreen mobile phones continues to grow, there has also been growing interest in adhesive materials used to bond the phone's window glass sheets and touchscreen sensor glass panels. Typically, an optically clear adhesive (OCA) film is used as the adhesive material. [0003] figure 1 and 2 An OCA film used between a cell phone window glass sheet and a touch screen panel is shown. figure 1 An example of a glass-type capacitive touch panel in which a window glass sheet 1 and an ITO film 4 are bonded by an OCA film 2 is shown. figure 2 An example of a film / film / tempered glass type resistive touch panel is shown in which the OCA film 2 is bonded to the window glass sheet 1 and the transparent conductive film 5 , and the transparent conductive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/00C09J175/16C09J7/10
CPCC08G18/8116C08G18/755C08G18/6674C08G18/672C09J7/00C08G18/725C08F290/067C08G18/792C09J2201/622C09J2475/00C09J175/16Y10T428/31551C09J7/10C09J2301/312C08G18/48
Inventor 金伊俊权智慧河京珍李吉成
Owner CHEIL IND INC
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