Pressure-sensitive adhesive compositions, pressure-sensitive adhesive sheets, and double-sided pressure-sensitive adhesive tapes

A composition, adhesive technology, applied in the direction of adhesive types, ester copolymer adhesives, film/flake adhesives, etc., which can solve the reduction of durability, use limitation, adhesion reduction, etc. question

Inactive Publication Date: 2006-08-30
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is already known that even with this method, the leakage of the antistatic agent may not be completely avoided, the adhesive force will be greatly reduced, and the durability will also be reduced, so there are restrictions on use.

Method used

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  • Pressure-sensitive adhesive compositions, pressure-sensitive adhesive sheets, and double-sided pressure-sensitive adhesive tapes
  • Pressure-sensitive adhesive compositions, pressure-sensitive adhesive sheets, and double-sided pressure-sensitive adhesive tapes
  • Pressure-sensitive adhesive compositions, pressure-sensitive adhesive sheets, and double-sided pressure-sensitive adhesive tapes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0241] (Preparation of Adhesive Composition)

[0242] To 100 parts by weight of the solution (30% by weight) of the above-mentioned acrylic polymer (A), add 20 parts by weight of the solution (50% by weight) of the above-mentioned acrylic oligomer (a), 2 parts by weight of the above-mentioned ionic Liquid (1), 0.1 parts by weight of 1,3-bis(N,N-diglycidylaminomethyl)cyclohexane (manufactured by Mitsubishi Gas Chemical Co., Ltd., TETRAD-C) as a crosslinking agent at 25°C Mix and stir for about 1 minute to prepare an acrylic adhesive solution (1).

[0243] (production of adhesive sheet)

[0244] Apply the above-mentioned acrylic adhesive solution (1) on the silicone-treated surface of a polyethylene terephthalate film with a thickness of 38 μm that has been silicone-treated on one side, and heat at 130° C. for 3 minutes , forming an adhesive layer with a thickness of 25 μm. Next, the silicone-treated side of a polyethylene terephthalate film having a thickness of 50 μm that h...

Embodiment 2

[0246] (Preparation of Adhesive Composition)

[0247] To 100 parts by weight of the solution (30% by weight) of the above-mentioned acrylic polymer (A), add 20 parts by weight of the solution (50% by weight) of the above-mentioned acrylic oligomer (a), 2 parts by weight of the above-mentioned ionic Liquid (2), 0.1 parts by weight of 1,3-bis(N,N-diglycidylaminomethyl)cyclohexane (manufactured by Mitsubishi Gas Chemical Co., Ltd., TETRAD-C) as a crosslinking agent, at 25°C Mix and stir for about 1 minute to prepare an acrylic adhesive solution (2).

[0248] (production of adhesive sheet)

[0249] A pressure-sensitive adhesive sheet was produced in the same manner as in Example 1, except that the above-mentioned acrylic pressure-sensitive adhesive solution (2) was used instead of the above-mentioned acrylic pressure-sensitive adhesive solution (1).

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Abstract

An object of the present invention is to provide a pressure-sensitive adhesive composition which is excellent in antistatic property of a pressure-sensitive adhesive tapes when separators are peeled off, and has reduced stainability in an adherend, and excellent in transparency, and prevention of occurrence of peeling off and separation, and an antistatic pressure-sensitive adhesive sheet and a double-sided pressure-sensitive adhesive tape using the same. There is provided a pressure-sensitive composition comprising an ionic liquid, a (meth)acryl-based oligomer of weight-average molecular weight of 1,000 to 50,000, and a (meth)acryl-based polymer of glass transition temperature (Tg) of 0°C or less as base polymer.

Description

technical field [0001] The present invention relates to an antistatic adhesive composition, and an antistatic adhesive sheet and a double-sided adhesive tape which are formed into a form such as a sheet or a tape using the adhesive composition. [0002] PSA sheets and double-sided PSA tapes formed from the antistatic PSA composition of the present invention can be applied to plastic products and the like that are prone to static electricity. Among them, it is particularly useful as an antistatic adhesive sheet and a double-sided adhesive tape used in the application of avoiding static electricity in electronic devices and the like, and in the application of preventing dust from adhering to static electricity. Background technique [0003] Adhesives can be bonded with a slight pressure in a short period of time at room temperature, and can be used in various applications for joining various items. For example, in optical applications, a panel of a liquid crystal display is f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/00C09J7/02
CPCC08L33/12C08K5/0075C09J2201/606C09J133/12C09J7/0217C08K5/01C09J2205/102C09J7/385C08L2666/04Y10T428/28Y10T442/2754C09J2301/302C09J2301/408C09J133/08
Inventor 岸冈宏昭天野立巳请井夏希
Owner NITTO DENKO CORP
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