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Pressure-sensitive adhesive compositions, pressure-sensitive adhesive sheets and surface protecting films

A technology of composition and adhesive, which is applied in the field of adhesive sheets, surface protection films, and antistatic adhesive compositions. And other issues

Active Publication Date: 2006-03-22
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even if such pressure-sensitive adhesive sheets are used, bleeding of the antistatic agent and the like cannot be avoided. There is a problem that the surface protection film partially floats from the protected body due to bleeding
[0009] As described above, none of these technical solutions can solve the above-mentioned problems well, and it is difficult to respond to the demand for further improvement of antistatic surface protection films in the technical field related to electronic devices where electrification or contamination becomes a particularly serious problem.

Method used

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  • Pressure-sensitive adhesive compositions, pressure-sensitive adhesive sheets and surface protecting films

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0217] (Preparation of binder solution)

[0218] The above-mentioned acrylic polymer (A) solution (40% by weight) was diluted to 20% by weight with ethyl acetate, and 0.4 parts by weight of the above-mentioned antistatic agent solution (a) (20% by weight) was added to 100 parts by weight of the solution, 1.1 parts by weight of trimethylolpropane / tolylylene diisocyanate trimer adduct (manufactured by Nippon Polyurethane Industries, Coronate L, 75% by weight ethyl acetate solution) as a crosslinking agent, dilauric acid as a crosslinking catalyst 0.6 parts by weight of dibutyltin (1% by weight of ethyl acetate solution) was mixed and stirred to prepare an acrylic adhesive solution (1).

[0219] (production of adhesive sheet)

[0220] The above-mentioned acrylic adhesive solution (1) was coated on the surface of the above-mentioned antistatic treated film opposite to the antistatic treated surface, and heated at 110° C. for 3 minutes to form an adhesive layer with a thickness of...

Embodiment 2

[0222] (Preparation of binder solution)

[0223] An acrylic adhesive solution ( 2).

[0224] (production of adhesive sheet)

[0225] 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).

Embodiment 3

[0227] (Preparation of binder solution)

[0228] The above-mentioned acrylic polymer (C) solution (40% by weight) was diluted to 20% by weight with ethyl acetate, and 0.7 parts by weight of the above-mentioned antistatic agent solution (a) (20% by weight) was added to 100 parts by weight of the solution, As a crosslinking agent, 0.5 parts by weight of hexamethylene diisocyanate trimeric isocyanate body (manufactured by Nippon Polyurethane Industry Co., Ltd., Coronate HX, 100% by weight), as a crosslinking catalyst, dibutyltin dilaurate (1% by weight) 0.4 parts by weight of ethyl acetate solution) were mixed and stirred to prepare an acrylic adhesive solution (3).

[0229] (production of adhesive sheet)

[0230] 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 (3) was used instead of the above-mentioned acrylic pressure-sensitive adhesive solution (1).

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Abstract

An adhesive combination comprises (methyl) acrylic acid series polymer and alkali metal salt, wherein the (methyl) acrylic acid series polymer takes the following compositions as monomer composition: 5 to 100 weight percent (methyl) acrylic acid alkylene oxide addition compound, 0 to 95 weight percent (methyl) acrylic acid series monomer of alkyl with one to fourteen carbon atoms except the addition compound and 0 to 95 weight percent other polymerizing monomer; moreover, the acid value of the (methyl) acrylic acid series polymer is less than ten. Therefore, the invention can provide an anti-static adhesive combination which can prevent an adherend receiving no destaticization from carrying static electricity during stripping, thereby reducing the pollution on the adherend and having high adhesion reliability; moreover, the invention also provides an anti-static adhesion slice class and surface protective film formed by the combination.

Description

technical field [0001] The present invention relates to an acrylic adhesive composition. More specifically, it also relates to an antistatic adhesive composition, adhesive sheets and surface protection films using the composition. [0002] The pressure-sensitive adhesive sheets of the present invention are used for plastic products and the like that tend to generate static electricity. Among them, it is particularly useful as a surface protection film used to protect the surface of optical members such as polarizing plates, wave resistance plates, retardation plates, optical compensation films, reflection sheets, and brightness improvement films used in liquid crystal displays, etc. . Background technique [0003] In recent years, when optical components and electronic components are transported or mounted on printed circuit boards, they are often transported in a state where each component is packaged with a predetermined sheet or in a state where an adhesive tape is atta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/00C09J7/02
CPCC09J133/14C09J7/0217C09J7/385Y10S526/931Y10T428/28Y10T428/2878Y10T428/2891C09J133/04C09J2203/318C09J7/22C09J2301/302
Inventor 小林夏希天野立巳安藤雅彦
Owner NITTO DENKO CORP
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