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Adhesive composition, adhesive layer and adhesive sheet

A composition and adhesive technology, applied in the field of adhesive layer and adhesive composition, to achieve the effects of excellent wettability and preventing the intrusion of air bubbles and the like

Inactive Publication Date: 2013-09-11
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Therefore, in order to solve the problems of conventional acrylic adhesives, an object of the present invention is to provide an adhesive composition, an adhesive layer, and an adhesive sheet using the adhesive layer having excellent wettability.

Method used

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  • Adhesive composition, adhesive layer and adhesive sheet
  • Adhesive composition, adhesive layer and adhesive sheet
  • Adhesive composition, adhesive layer and adhesive sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0127] Using 100 parts by weight (solid content) of the above-mentioned acrylic polymer (A), add 25 parts by weight of polyoxypropylene monomethyl ether with a molecular weight of 439 (manufactured by Kao Corporation, trade name "Smack MP-70"), 4 parts by weight 1 part by weight of the isocyanurate form of hexamethylene diisocyanate (manufactured by Nippon Polyurethane Industry Co., Ltd., trade name "Coronet HX") as a crosslinking agent and 0.015 parts by weight of dioctyltin dilaurate (Tokyo Seiki Co., Ltd. Chemical (Tokyo Fine Chemical Co., Ltd., trade name "OL-1") was diluted with toluene to a solid content concentration of 29% by weight, and then stirred to obtain a binder composition solution.

[0128] The adhesive composition solution was applied to "Lumira-S10" manufactured by Toray Co., Ltd., which is a polyethylene terephthalate (PET) film with a thickness of 38 μm, and dried at 130° C. for 30 seconds, thereby The solvent was removed to form an adhesive layer (thickne...

Embodiment 2

[0130] A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1 except that the compounding amount of polyoxypropylene monomethyl ether (manufactured by Kao Corporation, trade name "Smack MP-70") having a molecular weight of 439 was set to 10 parts by weight. .

Embodiment 3

[0132] A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1, except that the compounding amount of polyoxypropylene monomethyl ether (manufactured by Kao Corporation, trade name "Smack MP-70") having a molecular weight of 439 was set to 50 parts by weight. .

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Abstract

The present invention relates to an adhesive composition, an adhesive layer and an adhesive sheet. An adhesive composition includes an acrylic polymer (A) and polyoxyalkylene alkyl ether (B) with a molecular weight of 200 to 1000. The amount of the polyoxyalkylene alkyl ether (B) relative to 100 parts by weight of the acrylic polymer (A) is 0.1-100 parts by weight. The adhesive layer comprises the adhesive composition. The adhesive sheet is formed with the adhesive layer on a substrate.

Description

technical field [0001] The present invention relates to a PSA sheet excellent in wettability, a PSA layer used in the PSA sheet, and a PSA composition. Background technique [0002] The PSA sheet has a gel-like soft PSA layer on a substrate such as a plastic film or paper, and the PSA layer is solid and exerts adhesive force when wetted to an adherend. That is, the adhesive layer is required to sufficiently wet the adherend. On the other hand, the adhesive layer needs cohesive force (hardness) to the extent that it resists peeling. Therefore, the adhesive sheet is designed by considering wettability and cohesion, which are opposite characteristics. [0003] Therefore, generally, the PSA sheet is applied so as to be sufficiently adhered to the adherend by applying pressure when sticking it to the adherend, or applying pressure while heating in some cases. In the case where pressure or heat can be applied in this way, even if the wettability of the adhesive tape is poor, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J133/10C09J171/02C09J7/02
CPCC09J7/21C09J7/22C09J7/30C09J7/38C09J7/385C09J133/04C09J2203/00C09J2301/302
Inventor 伊关亮佐佐木翔悟徐创矢安藤雅彦
Owner NITTO DENKO CORP
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