Resin composition, pressure-sensitive adhesive composition, pressure-sensitive adhesive layer, pressure-sensitive adhesive sheet, and surface protective film

A technology of resin composition and pressure-sensitive adhesive, which is applied in the field of pressure-sensitive adhesive composition, pressure-sensitive adhesive sheet and surface protection film, and high-transparency pressure-sensitive adhesive layer, and can solve the problem of pressure-sensitive adhesive sheet or surface protection film Poor wettability, adhesive residue, etc.

Active Publication Date: 2014-02-12
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a pressure-sensitive adhesive sheet or surface protective film using an acrylic resin in the pressure-sensitive adhesive layer has poor wettability, so when the pressure-sensitive adhesive sheet or surface protective film is adhered by hand, there is a problem between the adherend and the sheet. or trap air bubbles between membranes
In addition, when an acrylic resin is used in a pressure-sensitive adhesive layer, there is a problem that adhesive residue is easily generated at the time of peeling, so that when a pressure-sensitive adhesive sheet or a surface protective film is used to protect a member in which the introduction of foreign matter is not particularly desired Problems such as the surface of optical components or electronic components
However, the use of specific metals such as tin has been restricted in view of environmental friendliness in recent years

Method used

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  • Resin composition, pressure-sensitive adhesive composition, pressure-sensitive adhesive layer, pressure-sensitive adhesive sheet, and surface protective film
  • Resin composition, pressure-sensitive adhesive composition, pressure-sensitive adhesive layer, pressure-sensitive adhesive sheet, and surface protective film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] To 100 parts by weight of polyol (A) having three OH groups and having a number average molecular weight Mn of 10000 (manufactured by ASAHI GLASS CO., LTD., PREMINOL S3011), was added as polyol 9.8 parts by weight of the functional isocyanate compound (B) Trimer (isocyanurate form) of hexamethylene diisocyanate as a multifunctional alicyclic isocyanate compound (Nippon Polyurethane Industry Co., Ltd. , Ltd.), trade name: CORONATE HX) and 0.04 parts by weight of tris(acetylacetonate)iron as catalyst (C) (manufactured by NIHON KAGAKU SANGYO CO., LTD.), trade name : Nacem Ferric Iron), and the mixture was diluted with ethyl acetate to have a solid content of 35% by weight, followed by stirring to provide the resin composition (1).

[0102] The obtained resin composition (1) was defined as a pressure-sensitive adhesive composition (1) and various evaluations were performed on the resin composition (1) or the pressure-sensitive adhesive composition (1).

[0103] Table 1 sho...

Embodiment 2

[0105] Except using 100 parts by weight of a polyol having three OH groups and having a number average molecular weight Mn of 2000 (manufactured by Daicel Corporation, PLACCEL L320AL) as the polyol (A), in the same manner as in Example 1 Resin composition (2) was obtained in the same manner as in .

[0106] The obtained resin composition (2) was defined as the pressure-sensitive adhesive composition (2) and various evaluations were performed on the resin composition (2) or the pressure-sensitive adhesive composition (2).

[0107] Table 1 shows the results.

Embodiment 3

[0109] In the same manner as in Example 1, except that 100 parts by weight of a polyol having two OH groups and having a number average molecular weight Mn of 2000 (manufactured by Daicel Corporation, PLACCEL CD220PL) was used as the polyol (A) A resin composition (3) was obtained.

[0110] The obtained resin composition (3) was defined as a pressure-sensitive adhesive composition (3) and various evaluations were performed on the resin composition (3) or the pressure-sensitive adhesive composition (3).

[0111] Table 1 shows the results.

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Abstract

Provided is a resin composition that can serve as a pressure-sensitive adhesive composition that is a material for forming a pressure-sensitive adhesive layer containing a polyurethane-based resin, the resin composition showing extremely high reactivity without any use of a tin compound as a catalyst, allowing a cross-linking reaction between a polyol and a polyfunctional isocyanate compound to rapidly progress, and being capable of providing a pressure-sensitive adhesive layer having high transparency. Also provided is a pressure-sensitive adhesive composition formed of such resin composition. Also provided is a pressure-sensitive adhesive layer having high transparency formed through the use of such pressure-sensitive adhesive composition. Also provided are a pressure-sensitive adhesive sheet and a surface protective film each including such pressure-sensitive adhesive layer. The resin composition includes: a polyol (A) having two or more OH groups; a polyfunctional isocyanate compound (B); and a catalyst (C), in which: the content ratio of the polyfunctional isocyanate compound (B) with respect to 100 parts by weight of the polyol (A) is 1 part by weight to 100 parts by weight; and the catalyst (C) includes an iron complex compound.

Description

technical field [0001] The present invention relates to resin compositions with extremely high reactivity. The present invention also relates to pressure-sensitive adhesive compositions containing such resin compositions. The present invention also relates to a pressure-sensitive adhesive layer having high transparency formed by using such a pressure-sensitive adhesive composition. The present invention also relates to a pressure-sensitive adhesive sheet and a surface protective film each comprising such a pressure-sensitive adhesive layer. Background technique [0002] Optical members and electronic members such as LCDs, organic EL displays, touch panels using such displays, lens portions of cameras, and electronic devices may each have a pressure-sensitive adhesive sheet or a surface protective film usually adhered to its exposed surface side , to prevent, for example, flaws on its surface during processing, assembly, inspection, transportation, etc. Such a pressure-sen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/72C08G18/28C08G18/22C09J175/04C09J7/02C09J7/22C09J7/38
CPCC08G18/222C08G18/4277C09J175/04C08G18/5021C08G18/482C09J11/06C08G2170/40C09J7/0246C08G18/794C08G18/4866C08G18/792C08G18/4829C08G18/4816C09J7/22C09J7/38C09J2475/00C08L75/04C09J2203/00C09J2301/302
Inventor 伊关亮佐佐木翔悟徐创矢安藤雅彦
Owner NITTO DENKO CORP
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