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Adhesive composition for polarizing plate, adhesive sheet, polarizing plate with adhesive layer, and laminate

A technology of adhesive layer and polarizer, applied in the direction of film/sheet adhesive, non-polymer adhesive additive, adhesive type, etc. components, etc., to achieve the effect of excellent anti-static performance

Active Publication Date: 2019-03-01
SOKEN CHEM & ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, due to the high insulation of the cover film or polarizer, static electricity will be generated, which will cause adverse effects such as disturbing the alignment of liquid crystals and damaging electronic components.

Method used

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  • Adhesive composition for polarizing plate, adhesive sheet, polarizing plate with adhesive layer, and laminate
  • Adhesive composition for polarizing plate, adhesive sheet, polarizing plate with adhesive layer, and laminate
  • Adhesive composition for polarizing plate, adhesive sheet, polarizing plate with adhesive layer, and laminate

Examples

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Effect test

Embodiment

[0168] Hereinafter, the present invention will be described more specifically based on examples, but the present invention is not limited to these examples. In descriptions of the following Examples and the like, "parts" means "parts by mass" unless otherwise specified.

[0169] [Evaluation of ionic compounds]

[0170] 2 g of water and 2 g of the ionic compound were added to a polypropylene bottle to prepare a test solution having a concentration of 50% by mass. 0.25 g (thickness 40 μm, 40 mm × 120 mm) of triacetyl cellulose film (TAC film, K-10 manufactured by Konica Minolta Co., Ltd. (Konica Minolta)) was thrown into this test solution, and it was immersed . After the above-mentioned polypropylene bottle was left to stand for 300 hours in an environment with a temperature of 85° C. and a humidity of 85%, the above-mentioned test solution was collected, and the concentration of acetic acid in the solution was determined by high-speed liquid chromatography (manufactured by S...

Synthetic example A1

[0190] Add 90 parts of 2-methoxyethyl acrylate, 6.5 parts of n-butyl acrylate, 3 parts of 2-hydroxyethyl acrylate, 0.5 parts of acrylamide and 100 parts of ethyl acetate solvent was heated up to 80° C. while introducing nitrogen gas. Then, 0.1 part of 2,2'-azobisisobutyronitrile was added, and the polymerization reaction was performed at 80 degreeC for 6 hours in nitrogen atmosphere. After completion of the reaction, it was diluted with ethyl acetate to obtain a polymer solution having a solid content concentration of 30% by mass. The Mw of the obtained (meth)acrylic polymer A1 was 1 million, and Mw / Mn was 7.5.

Synthetic example A2 and A3

[0192] Except that the polymerizable monomer used in the polymerization reaction was changed to the content described in Table 2, the synthesis was carried out in the same manner as in Synthesis Example A1, and a solid containing (meth)acrylic polymer A2 or A3 was obtained. A polymer solution having a component concentration of 30% by mass. The results are shown in Table 2.

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Abstract

The present invention provides an adhesive composition for polarizing plates capable of forming an adhesive layer having excellent antistatic performance and durability under high temperature and high humidity. The adhesive composition for a polarizer contains: (A) 41% by mass or more of a polyoxyalkylene or alkoxyalkyl (meth)acrylate (a1) polymerizable monomer polymerized; The obtained (meth)acrylic polymer, (B) crosslinking agent and (C) anion are selected from N,N-bis(fluorosulfonyl)imide and N,N-bis(trifluoromethanesulfonyl)imide Amines and cations are organic cations and ionic compounds with a melting point above 25°C.

Description

technical field [0001] The present invention relates to an adhesive composition for a polarizing plate, an adhesive sheet, a polarizing plate with an adhesive layer, and a laminate. Background technique [0002] In recent years, the use of liquid crystal elements in monitors and televisions for vehicles, outdoor equipment, and personal computers has been expanding, and the use environment has become very severe. The liquid crystal cell has a structure in which a liquid crystal material is sandwiched between two substrates (such as glass plates), and a polarizer is adhered to the surfaces of the substrates through an adhesive layer. Therefore, the pressure-sensitive adhesive layer is required to have durability under high temperature, high humidity and heat. [0003] When manufacturing a liquid crystal element, the adhesive layer for a polarizing plate is usually attached to the polarizing plate in a state where a release-treated cover film is adhered on one side, and then t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/14B32B7/02B32B27/00C09J7/30C09J11/06G02B1/10G02B5/30
CPCB32B27/00C09J11/06C09J133/14G02B1/10G02B5/30C09J7/10C09J7/00
Inventor 黑泽翔室井佐知
Owner SOKEN CHEM & ENG CO LTD
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