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Adhesive composition, adhesive sheets and surface protecting film

A technology of adhesive and composition, which is applied in the fields of adhesive optical components and surface protection films, can solve the problems of lower productivity, higher cost, higher cost, etc., and achieve high antistatic effect

Active Publication Date: 2005-09-14
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, in these methods, it is necessary to add a new process for forming an antistatic layer on the optical component, and the increase of this process will reduce productivity and increase cost.
Therefore, the polarizing plate provided with the antistatic layer has the problem of high cost compared with the conventional polarizing plate without antistatic treatment.

Method used

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  • Adhesive composition, adhesive sheets and surface protecting film
  • Adhesive composition, adhesive sheets and surface protecting film
  • Adhesive composition, adhesive sheets and surface protecting film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0260] Next, examples and the like which specifically show the configuration and effects of the present invention will be described. However, the evaluation items in Examples and the like were measured by the methods shown below.

[0261]

[0262] The acid value was measured using an automatic titration device (manufactured by Hiranuma Sangyo Co., Ltd., COM-550), and was obtained by the following formula.

[0263] A={(Y-X)×f×5.611} / M

[0264] A: acid value

[0265] Y: Titration of sample solution (ml)

[0266] X: Titration of the solution of 50g of mixed solvent only (ml)

[0267] f: factor of the titration solution

[0268] M: weight of polymer sample (g)

[0269] The measurement conditions are as follows.

[0270] Sample solution: about 0.5 g of a polymer sample was dissolved in 50 g of a mixed solvent (toluene / 2-propanol / distilled water=50 / 49.5 / 0.5, weight ratio) to prepare a sample solution.

[0271] Titration solution: 0.1N, 2-propanol potassium hydroxide solutio...

manufacture example I-1

[0324] (acrylic polymer A)

[0325] In a nitrogen stream at 65°C, react a mixture of 200 g of 2-ethylhexyl acrylate, 8 g of 2-hydroxyethyl acrylate, 0.4 g of 2,2'-azobisisobutyronitrile, and 312 g of ethyl acetate. A solution (40% by weight) of an acrylic polymer having a Tg=-68° C., a weight average molecular weight of 500,000, and an acid value of 0 was obtained.

manufacture example I-2

[0327] (acrylic polymer B)

[0328] In a nitrogen stream at 65°C, react a mixture of 200 g of n-butyl acrylate, 8 g of 2-hydroxyethyl acrylate, 0.4 g of 2,2'-azobisisobutyronitrile, and 625 g of ethyl acetate for 6 hours to obtain A solution (25% by weight) of an acrylic polymer having Tg=-54°C, a weight average molecular weight of 540,000, and an acid value of 0.

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PUM

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Abstract

The present invention provides a pressure-sensitive composition comprising an ionic liquid and a polymer having a glass transition temperature Tg of 0 DEG C or lower as a base polymer as a pressure-sensitive adhesive composition in which electrification of a pressure-sensitive adhesive sheet can be prevented upon peeling, and staining property on an adherend can be reduced, and an antistatic pressure-sensitive sheet and surface protecting film using the pressure-sensitive adhesive composition.

Description

technical field [0001] The present invention relates to an antistatic pressure-sensitive adhesive composition, and antistatic pressure-sensitive adhesive sheets and surface protection films formed in a form such as a sheet or a tape using the pressure-sensitive adhesive composition. [0002] PSA sheets composed of the antistatic PSA composition of the present invention are preferably used for plastic products and the like that tend to generate static electricity. Among them, antistatic adhesive sheets used in applications where static electricity should be avoided, such as electronic equipment, and surface protection films used to protect the surface of optical components such as polarizers, wavelength plates, optical compensation films, and reflective sheets ,is very useful. [0003] Moreover, this invention relates to the adhesive type optical component provided with the antistatic adhesive layer on an optical component. The present invention is preferably used for adhesiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/00C08K5/19C08K5/3415C08K5/3435C08K5/3445C08K5/3462C08K5/36C08K5/49C09J7/22C09J7/38C09J9/00C09J11/06C09J133/00C09J133/08C09J133/10
CPCC09J133/08C08K5/0075C09J7/0207C09J7/0246C09J2201/606C09J133/10C09J7/0217C09J2433/00C09J2205/102C09J11/06C09J7/38C09J7/385C09J7/22Y10T428/28Y10T428/2852C09J2301/408C09J2301/302C09J2203/318C09J11/02C09J7/40C09J133/06G02B5/00
Inventor 天野立巳安藤雅彦奥村和人小林夏希
Owner NITTO DENKO CORP
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