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Adhesive film, adhesive composition for the film, and optical element comprising the film

A technology of adhesive film and composition, applied in the direction of film/sheet adhesive, adhesive type, ester copolymer adhesive, etc., can solve the problems of conversion signal failure, serious failure, etc.

Active Publication Date: 2017-04-26
CHEIL IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, when the dielectric constant of the adhesive film varies greatly, the above-mentioned failures are more severe
Also, malfunction occurs when the conversion signal changes greatly due to external noise in the touch panel display

Method used

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  • Adhesive film, adhesive composition for the film, and optical element comprising the film
  • Adhesive film, adhesive composition for the film, and optical element comprising the film
  • Adhesive film, adhesive composition for the film, and optical element comprising the film

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0113] Preparation example 1: (meth)acrylic acid copolymer 1 containing carbonate group and aromatic group

[0114] 90 g of aromatic group-containing polyol carbonate was charged into a 2L four-necked flask, and heated to 60°C. Then, 0.5 g of dibutyltin dilaurate diluted in toluene at a ratio of 10% was added to the flask. The resultant was cooled to 50° C., and then 6 g of 2-methacryloyl chloride and 6 g of 2-methacryloyloxyethyl isocyanate (MOI) were added thereto. The resultant was kept at 50°C for 7 hours. After confirming by IR that no NCO group of MOI was observed, the resultant was cooled to 40°C. Preparation of (meth)acrylate polymers containing carbonate groups and aromatic groups represented by general formula 1A:

[0115] [Formula 1A]

[0116]

[0117] Among them, a is 4.

preparation example 2

[0118] Preparation example 2: (meth)acrylic acid copolymer 2 containing carbonate group and aromatic group

[0119] 90 g of aromatic group-containing polyol carbonate was charged into a 2L four-necked flask, and heated to 60°C. Then, 0.5 g of dibutyltin dilaurate diluted in toluene at a ratio of 10% was added to the flask. 11 g of 3-isocyanatopropyltriethoxysilane were added and the temperature was maintained at 60° C. for 3 hours. After confirming by IR that no NCO group of MOI was observed, the resultant was cooled to 50° C., and then 6 g of 2-methacryloyloxyethyl isocyanate (MOI) was added. The resultant was kept at 50°C for 7 hours. After confirming by IR that no NCO group of MOI was observed, the resultant was cooled to 40°C. Preparation of (meth)acrylate copolymers containing carbonate groups, aromatic groups and silyl groups represented by general formula 1B:

[0120] [Formula 1B]

[0121]

[0122] Among them, a is 4.

[0123] The details of the components used...

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Abstract

An adhesive film, an adhesive composition for the film, and an optical element comprising the film are disclosed. The adhesive composition described above contains a (meth)acrylate copolymer having a carbonate group and an aromatic group. The above-mentioned adhesive film can be used to attach transparent elements to each other, suppress a change in capacitance, prevent failure due to contact, and improve outdoor visibility in a capacitive touch panel.

Description

technical field [0001] The present invention relates to an adhesive film, an adhesive composition for the film, and an optical element comprising the film. More particularly, the present invention relates to an adhesive film, an adhesive composition for the film, and an optical element comprising the film, the adhesive film being useful for attaching transparent elements to each other, suppressing changes in capacitance, preventing contact failure and improve outdoor visibility in capacitive touch panels. Background technique [0002] Capacitive touchscreens are bonded to the window or membrane with a clear adhesive. Capacitive touchpads detect changes in the capacitance of a window or membrane. When human hands or predetermined materials (conductors or liquids) approach or touch the monopolar detection plate, the dielectric constant of the monopolar detection plate changes. According to the above-mentioned dielectric constant change of the unipolar detection plate, the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/00C09J4/02
CPCC08F20/10C08F20/20C08F20/36C08F22/1006C09J4/00C09J7/22C09J7/29C09J133/14C09J2203/318
Inventor 金伊俊赵益晥金起龙文星现韩仁天
Owner CHEIL IND INC