Adhesive layer and adhesive film

An adhesive layer and adhesive technology, applied in the directions of adhesives, adhesive types, ester copolymer adhesives, etc., can solve the problems of reduced yield, difficulty in improving screen display performance, and inability to be practical, and achieve the purpose of maintaining the surface. The effect of hardness

Active Publication Date: 2016-11-16
FUJIMORI KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it cannot be put into practical use due to a decrease in the yield of the product due to the complicated manufacturing process, and it is technically difficult to improve the display performance of the screen.

Method used

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  • Adhesive layer and adhesive film
  • Adhesive layer and adhesive film
  • Adhesive layer and adhesive film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Introduce nitrogen gas into the reaction device equipped with a stirrer, thermometer, reflux cooler and nitrogen gas introduction pipe, and replace the air in the reaction device with nitrogen gas. After that, 75 parts by weight of butyl acrylate, 25 parts by weight of tert-butyl acrylate, 1.0 part by weight of 8-hydroxyoctyl acrylate, and 60 parts by weight of a solvent (ethyl acetate) were added to the reaction device. Thereafter, 0.1 parts by weight of azobisisobutyronitrile as a polymerization initiator was dripped over 2 hours, and reacted at 65° C. for 6 hours to obtain an acrylic polymer solution used in Example 1.

Embodiment 2～5 and comparative example 1～3

[0060] In the same manner as the acrylic polymer solution 1 used in Example 1 above, except that the composition of the monomers was set as described in Group (1) and Group (2) of Table 1, the 2-5 and the acrylic polymer solutions of Comparative Examples 1-3.

[0061]

[0062] [Example 1]

[0063] For the acrylic polymer solution of Example 1 prepared as described above, add 0.2 parts by weight of CORONATE HX (isocyanurate body of HDI), 0.05 parts by weight of KBM-803 (3-mercaptopropyltrimethoxysilane) , stirring and mixing to obtain the adhesive composition of Example 1. After coating this adhesive composition on a release film (polyethylene terephthalate (PET) film coated with a silicone resin), the solvent was removed by drying at 90°C, and then dried at 23°C , 50% RH atmosphere for 7 days, thereby obtaining the adhesive film of Example 1 having an adhesive layer crosslinked through the adhesive composition on one side of the release film.

[0064] [Examples 2-5 and Co...

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Abstract

The present invention provides an adhesive layer and anadhesive film which are used to bond layers of anoptical member and are durable and operable and free from errors for the measurement values of the surface hardness of the laminated body with attached optical member. The pencil hardness of the surface of the optical member attached to non-alkali glass through the adhesive layer and the pencil hardness of surface of the optical member are not less than 2H.In the adhesive layer,the gel fraction of acrylic polymer after being crosslinked with0.01 to 1.0 parts by weight of the crosslinking agentisocyanate compound reaches 40-85%, the thickness is 1 to 20 micrometers. The adhesive force of the adhesive layer in the thickness of 10 micrometers is 1.5-8.0N / 25M. The main component of the acrylic polymer is 100 parts by weight of (Meth) acrylic monomer and 0.1 to 10 parts by weight of a hydroxyl group-containing copolymerizable vinyl monomer, the acid value being 0.1 or less, and the weight-average molecular weight beingone million or more.

Description

technical field [0001] The present invention relates to an adhesive layer of a thin film having a thickness of 1 μm to 20 μm used for interlayer lamination of optical components, and an adhesive film interposing the adhesive layer between release films. Background technique [0002] In recent years, various display devices in which a capacitive touch panel is externally mounted on a liquid crystal panel have been widely used in, for example, smartphones, tablet terminals, and tablet PCs. In such a display device, there is a physical space between the liquid crystal panel and the touch panel. Therefore, external light or the like is reflected on the upper surface of the liquid crystal panel or the lower surface of the touch panel, and there is a problem that the visibility in a bright environment such as outdoors is particularly reduced. [0003] As a method of solving this problem of reduced visibility, an in-cell type display device in which the function of a touch panel i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J11/06C09J7/00C09J7/02C08F220/18C08F220/28C08F220/14C08F220/54
CPCC09J7/00C09J7/22C09J7/30C09J11/06C09J133/08C08F220/18C09J2433/00C09J2203/318C08F220/1804C08F220/281C08F220/14C08F220/54G02B5/30C09J7/20C09J133/10B32B7/12B32B2551/00B32B2457/20
Inventor 长仓毅长谷川良吉田弘幸菱沼昌世
Owner FUJIMORI KOGYO CO LTD
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