Photocurable coating composition, low-refraction layer, and anti-reflection film

A low-refractive index layer and coating composition technology, applied in the field of rights and interests, can solve the problems of weak interlayer adhesion, reduced interface adhesion, and unsatisfactory performance improvement.

Active Publication Date: 2018-04-17
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the method of forming a plurality of layers separately performs the process of forming each layer, there is a disadvantage in reducing scratch resistance due to weak interlayer adhesion (interfacial adhesion)
Therefore, many studies have been conducted in order to reduce the absolute reflection amount of incident light from the outside and improve the scratch resistance of the surface, but the degree of performance improvement produced is not satisfactory.

Method used

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  • Photocurable coating composition, low-refraction layer, and anti-reflection film
  • Photocurable coating composition, low-refraction layer, and anti-reflection film
  • Photocurable coating composition, low-refraction layer, and anti-reflection film

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0141] Preparation Example 1: Preparation of Hard Coating Film (HD1)

[0142] (1) Preparation of hard coating film (HD1)

[0143] A salt-type antistatic hard coat liquid manufactured by KYOEISHA Corporation (solid content: 50% by weight, product name: LJD-1000) was coated on a triacetylcellulose film with a #10 Meyer bar and dried at 90° C. for 1 minute, Then at 150mJ / cm 2 Ultraviolet rays were irradiated to prepare a hard coat film (HD1) having a thickness of 5 μm.

preparation Embodiment 2

[0144] Preparation Example 2: Preparation of Hard Coating Film (HD2)

[0145] 30 g of pentaerythritol triacrylate, 2.5 g of high molecular weight copolymer (BEAMSET 371, Arakawa, epoxy acrylate, molecular weight 40,000), 20 g of methyl ethyl ketone and 0.5 g of leveling agent (Tego Wet 270) After uniform mixing, 2 g of acrylic-styrene copolymer resin fine particles (volume average particle diameter: 2 μm, manufacturing company: Sekisui Plastics) having a refractive index of 1.525 were added to prepare a hard coat composition. The resulting hardcoat composition was coated on a triacetylcellulose film with a #10 Meyer bar and dried at 90°C for 1 minute. at 150mJ / cm 2 The dried product was irradiated with ultraviolet rays to prepare a hard coat film having a thickness of 5 μm.

[0146]

[0147] (1) Preparation of Photocurable Coating Composition for Forming Low Refractive Index Layer

[0148] The components in Table 1 and Table 2 below were mixed and diluted in a solvent MIB...

experiment example

[0162]

[0163] The following experiments were performed on the antireflection films obtained in Examples and Comparative Examples.

[0164] 1. Measurement of average reflectance

[0165] Darken one side of the anti-reflection film prepared above, and then measure at 480 nm using SolidSpec 3700 (SHIMADZU) in measurement mode when HD1 is used as the hard coat layer and in 100% T mode when HD2 is used as the hard coat layer Average reflectance in the wavelength region to 780nm.

[0166] 2. Measurement of scratch resistance

[0167] The surfaces of the antireflection films obtained in Examples and Comparative Examples were rubbed while steel wool was loaded and rubbed back and forth 10 times at a reciprocating rate of 27 times per minute. The maximum load at which scratches of 1 cm or less were observed with the naked eye was measured.

[0168] 3. Evaluation of antifouling performance

[0169] On the surfaces of the antireflection films obtained in Examples and Comparative ...

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Abstract

The present invention relates to a photocurable coating composition, a low-refraction layer comprising a photocured product of the photocurable coating composition, and an anti-reflection film comprising the low-refraction layer, the photocurable coating composition comprising: a photopolymerizable compound; inorganic minute particles; two or more kinds of fluorine-containing compounds comprisinga photoreactive functional group; and a photopolymerization initiator, wherein the two or more kinds of fluorine-containing compounds comprising a photoreactive functional group differ in the range offluorine contents depending on the kind thereof.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims Korean Patent Application No.10-2015-0135730 filed at the Korean Intellectual Property Office on September 24, 2015 and Korean Patent Application No.10-2016- filed at the Korean Intellectual Property Office on September 20, 2016 0120100, the disclosures of these two applications are fully incorporated into this specification by reference. [0003] The invention relates to a photocurable coating composition, a low refractive index layer and an antireflection film. More specifically, the present invention relates to: a photocurable coating composition that can provide a low-refractive index layer that has low reflectance and high light transmittance, and can simultaneously achieve high scratch resistance and high antifouling performance ; and an anti-reflection film that can improve screen clarity of a display device and exhibit excellent mechanical properties. Background techni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/00C08J7/04C09D4/00G02B1/11C08J7/043C08J7/044C08J7/046
CPCC09D5/00G02B1/11C09D4/06C08F265/06G02B1/111C08F222/103C08F222/1067C09D4/00C09D5/006C09D7/65C08L83/06C09D7/61C09D7/67C09D7/70C09D7/62C08K7/26C08K3/36C08J5/18C08K2201/003C08K2201/011C08J7/042
Inventor 金芙敬张锡勋边真锡张影来金宪
Owner LG CHEM LTD
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