Composition for making hard coating layer

A hard coating and composition technology, applied in coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of being unsuitable for protective window covers, difficult to achieve high hardness, and insufficient flexibility, and achieve durable Improved scratch resistance and adhesion, improved hardness and flexibility, and excellent crack resistance

Active Publication Date: 2016-10-12
DONGWOO FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, general light-curable composite resins are not only difficult to achieve a high hardness equivalent to tempered glass, but also often cause curling due to shrinkage during curing, and are not sufficiently flexible, so they are not suitable for use as Disadvantages of Protective Window Covers Used in Flexible Displays

Method used

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  • Composition for making hard coating layer
  • Composition for making hard coating layer
  • Composition for making hard coating layer

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0117] Production Example 1. Production of Radical Polymerizable Composition (A-1)

[0118] 55 parts by weight of 6-functional acrylate DPEA-12 (manufactured by Nippon Kayaku Co., Ltd.), 40 parts by weight of 2-functional acrylate M-280 (manufactured by Miwon Specialty Chemical Company) and 5 parts by weight of photoinitiator Irgacure-184 (manufactured by BASF Company) parts were mixed to prepare a free radically polymerizable composition.

manufacture example 2

[0119] Production Example 2. Production of Radical Polymerizable Compound (A-2)

[0120] 30 parts by weight of 6-functional acrylate DPEA-12 (manufactured by Nippon Kayaku Co., Ltd.), 25 parts by weight of 10-functional urethane acrylate oligomer UV-1700 (manufactured by SK-cytec), Nanocryl C165 (manufactured by Evonik Ltd. .manufactured) 40 parts by weight and 5 parts by weight of a photoinitiator Irgacure-184 (manufactured by BASF Corporation) were mixed to prepare a radically polymerizable composition.

manufacture example 3

[0121] Production example 3. Production of cationically polymerizable composition (B)

[0122]A cationically polymerizable composition was prepared according to the composition and parts by weight shown in Table 1 below.

[0123] [Table 1]

[0124]

[0125] Examples and Comparative Examples

[0126] The composition for hard-coat layer formation was prepared according to the composition and weight part shown in following Table 2.

[0127] [Table 2]

[0128]

[0129] Manufacture and evaluation of hard coat film

[0130] The compositions of Examples and Comparative Examples were coated on one side of a polyimide film (manufactured by Mitsubishi Gas Chemical Co., Ltd., 100 μm, L-3430) so that the thickness after drying became 20 μm, and the composition was dried in an oven at 80° C. Let dry for 5 minutes. Then, it hardened|cured with the light quantity of 1000mJ by the metal halide lamp (FE), and performed the post-processing for 30 minutes in the oven of 80 degreeC, an...

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Abstract

Disclosed is a composition for making a hard coating layer. The composition exhibits excellent hardness and flexibility through containing a photo free radical polymerizable compound, a photo free radical polymerizable initiator, an epoxy photo positive ion polymerizable compound, a polyol compound and a photo positive ion polymerizable initiator. Therefore, a hard coating layer with improved scratch resistance and adhesion, inhibited rolling performance, and excellent bending crack resistance is formed.

Description

technical field [0001] The present invention relates to a composition for forming a hard coat layer. Background technique [0002] In recent years, thin display devices using flat panel display devices, such as liquid crystal displays and organic light emitting diode displays, have attracted attention. In particular, these thin display devices are implemented in the form of touch screen panels, not only related to smart phones (smart phone), tablet PC (tablet) PC, but also extended to various wearable devices (wearable devices), widely Used in various smart devices characterized by portability. [0003] For these portable display devices based on touch screen panels, in order to protect the display panel from being damaged by scratches and external impacts, the display panel has a window cover (window cover) for protecting the display. , using tempered glass for the display as a window cover. Tempered glass for displays is thinner than normal glass, but it has high streng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D163/00C09D167/04
CPCC09D133/04C09D163/00C09D167/04C08L2205/03C08L2205/04C08L63/00C08L67/04C08L33/04
Inventor 洪承模李正银
Owner DONGWOO FINE CHEM CO LTD
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