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Adhesive composition

A composition and adhesive technology, applied in the direction of adhesives, film/sheet adhesives, non-polymer adhesive additives, etc., can solve the problems of deterioration, low weather resistance, etc., and achieve sufficient ultraviolet absorption performance Effect

Pending Publication Date: 2022-05-06
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among these components, liquid crystal compounds used in organic EL elements and liquid crystal cells often use compounds with low weather resistance, so deterioration due to ultraviolet rays (UV) is likely to cause problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0856] The present invention will be described in more detail below with reference to Examples and Comparative Examples, but the present invention is not limited to these examples. In the example, the % and the part indicating the content or usage amount are the quality standards unless otherwise stated.

Synthetic example 1

[0857] (Synthesis example 1) Synthesis of compound represented by formula (UVA-1)

[0858]

[0859] A 500 mL four-necked flask equipped with a Dimroth condenser and a thermometer was placed in a nitrogen atmosphere, 20 parts of Dimedone, 11.2 parts of pyrrolidine, and 200 parts of toluene were charged, and reflux stirring was performed for 5 hours. . The solvent was distilled off and purified from the obtained mixture, and 27.4 parts of compounds represented by formula (M-3) were obtained.

[0860]

[0861] Under a nitrogen atmosphere, 1.0 parts of the compound represented by the obtained formula (M-3), 2.8 parts of p-toluenesulfonyl cyanide, and 10 parts of acetonitrile were mixed. The resulting mixture was stirred at 0-5°C for 5 hours. The solvent was distilled off from the obtained mixture, it refine|purified, and 0.6 part of the compound represented by Formula (M-4) was obtained.

[0862]

[0863]Under a nitrogen atmosphere, 4.8 parts of the compound represente...

Embodiment 1

[0877] (Example 1): Production of adhesive composition (1)

[0878] A crosslinking agent (F) (manufactured by Tosoh Corporation: trade name "CORO") was mixed with respect to 100 parts of solid content of an ethyl acetate solution (resin concentration: 20%) of the acrylic resin (A1) as the resin (A). NAT L", isocyanate compound, solid content 75%) 0.3 part, silane compound (G) (manufactured by Shin-Etsu Chemical Co., Ltd.: trade name "KBM3066") 0.28 part, radical curable component (E) (Shin-Nakamura Chemical Co., Ltd.) manufactured by Kogyo Co., Ltd.: trade name "A-DPH-12E", hexafunctional (meth)acrylate-based compound) 10 parts, initiator (D) (manufactured by ADEKA Co., Ltd.: trade name "NCI-730", as oxime 1.5 parts of photoradical generator for ester-based compound, 2 parts of photoselective absorption compound (B) (compound (UVA-1)), solid of solution containing photoselective absorption resin (C) synthesized in Polymerization Example 2 10 parts of components were added, an...

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Abstract

The invention provides an adhesive layer and an adhesive composition for forming the adhesive layer, wherein the adhesive layer has sufficient ultraviolet absorption performance even if the film thickness is reduced and the generation of bleeding is reduced. The present invention provides an adhesive composition containing a resin (A), a light selective absorption compound (B) which contains a merocyanine structure in the molecule and exhibits a maximum absorption at a wavelength of 360 nm or more, and a light selective absorption resin (C) which exhibits a maximum absorption at a wavelength of 300 nm or more and less than 360 nm. Also provided is an adhesive layer formed from the adhesive composition.

Description

technical field [0001] The present invention relates to a pressure-sensitive adhesive composition, a pressure-sensitive adhesive layer formed from the pressure-sensitive adhesive composition, and an optical laminate in which the pressure-sensitive adhesive layer is laminated. Background technique [0002] In display devices (FPD: Flat Panel Display) such as organic electroluminescence displays (organic EL display devices) and liquid crystal display devices, various types of organic EL elements, display elements such as liquid crystal cells, and optical films such as polarizing plates are used. member. Among these members, as the liquid crystal compound used in the organic EL element and the liquid crystal cell, a compound with low weather resistance is often used, and therefore, deterioration due to ultraviolet rays (UV) tends to cause a problem. In order to solve such a problem, Patent Document 1 describes an ultraviolet-absorbing (shielding) adhesive composition containin...

Claims

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Application Information

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IPC IPC(8): C09J201/00C09J4/06C09J4/02C09J11/06C09J7/38G02B5/22G02B5/30H01L51/50H05B33/02
CPCC09J201/00C09J4/06C09J11/06C09J7/38C09J7/385H05B33/02G02B5/22G02B5/30C09J2301/302C08K5/3415C09J2301/312
Inventor 浅津悠司西上由纪久门浩司
Owner SUMITOMO CHEM CO LTD
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