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Cycloolefin-based film

A cycloolefin-based and cycloolefin technology, applied in the field of cycloolefin-based films, can solve the problems of button durability, difficulty in filming, and uneven display, and achieve excellent button durability, high adhesion, and reduced display unevenness. Effect

Active Publication Date: 2017-08-04
KONICA MINOLTA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The touch panel using the above-mentioned glass base material has high durability for the production of the touch panel, but on the other hand, there are problems that it is difficult to thin it, and it is lost due to damage during transportation and glass breakage when handling the touch panel mounting terminal. Function
However, it has been found that if the base material produced by this production method is used, even if the amount of the ultraviolet absorber is small, the process will be contaminated during long-term use, or the ultraviolet absorber will be generated on the surface of the film in a durability test such as high temperature and high humidity. microcrystals, as a transparent conductive film, there is a problem in key durability, and display unevenness occurs through keys

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0338]

[0339] (Synthesis of cycloolefin-based polymer 1)

[0340] 22100 parts of the exemplary compound of the cycloolefin monomer (general formula A-2), 3.6 parts of 1-hexene as a molecular weight regulator, and 200 parts of toluene were put into a nitrogen-substituted reaction vessel, and heated to 80°C. Add triethylaluminum ((C) as polymerization catalyst therein 2 h 5 ) 3 Al) 0.17 parts of toluene solution of 1.5 mol / L and WCl 6 1.0 parts of the solution (concentration: 0.05 mol / L) was heated and stirred at 80° C. for 3 hours to perform a ring-opening polymerization reaction to obtain a polymer solution. The polymerization conversion rate in this polymerization reaction was 98%. Among them, the above WCl 6 The solution is tungsten hexachloride (WCl 6 ) modified, and the molar ratio of tert-butanol to methanol to tungsten is 0.35:0.3:1 WCl 6 solution.

[0341] 4000 parts of the resulting polymer solution was put into an autoclave, and 0.48 parts of RuHCl(CO)[P(C ...

Embodiment 2

[0406]

[0407] In production of the cycloolefin-based film 101 , the cycloolefin-based film 201 was produced in the same manner except that the main dope 1 was changed to the following main dope 2 .

[0408]

[0409]

[0410]

[0411] In the preparation of the cycloolefin-based film 201, as described in Table 2, as a solvent for synthesizing the cycloolefin-based resin, in addition to toluene, which is an aromatic solvent, xylene and styrene were used. In addition to methane, chloroform and 1,2-dichloroethane were also used as halide-based solvents, and various solvents listed in Table 2 were used in equivalent amounts as non-aromatic solvents. The cycloolefin-based films 202 to 218 are prepared in a precise manner.

[0412] Table 2 shows the results of (1) key durability test and (2) evaluation of display unevenness in Example 1 using the produced cycloolefin-based films 201 to 218 .

[0413] 【Table 2】

[0414]

[0415] As can be seen from Table 2, the cycloole...

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Abstract

It is the object of the present invention to provide a cycloolefin-based film which, when used as a substrate for a touch panel, shows high adhesion to a transparent conductive layer and excellent keyboard durability in a high-temperature high-humidity durability test, and has reduced display inconsistency. The cycloolefin-based film of the present invention is a cycloolefin-based film containing a cycloolefin-based polymer having at least a polar group, and comprises: an aromatic solvent in the range of 50-300 ppm; a halide-based solvent in the range of 300-800 ppm; and a non-aromatic solvent (excluding halide-based solvents) in the range of 300-6000 ppm, wherein the non-aromatic solvent has a solubility parameter value (SP value) in the range of 15-25 ((MPa)^1 / 2) and has a surface tension value in the range of 20-25 (mN / m).

Description

technical field [0001] The present invention relates to a cycloolefin-based film. More specifically, the present invention relates to high adhesion to a transparent conductive layer when used as a base material for a touch panel, excellent key durability in durability tests such as high temperature and high humidity, and reduced display unevenness. Olefin film. Background technique [0002] In recent years, the technology of the touch panel which inputs information by touching with a finger etc. is known. [0003] There are various types of touch panels that detect touch by a finger or the like, and a capacitive type is mentioned as a touch panel that is generally popular in devices that require multi-point detection, such as smartphones. A capacitive touch panel includes, for example, an electrode pattern using a matrix-shaped transparent conductive layer on a detection surface, and detects a change in capacitance at a position touched by a finger or the like. [0004] A...

Claims

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Application Information

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IPC IPC(8): C08L45/00C08J5/18
CPCC08J5/18C08J2345/00C08F32/04C08L45/00C08L2203/16C08L2203/20
Inventor 中岛新之助南条崇
Owner KONICA MINOLTA INC
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