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High-hardness hard coat laminate

A laminated, high-hardness technology, applied in the direction of coatings, layered products, synthetic resin layered products, etc., can solve problems such as difficult to dissolve organic solvents, damage the appearance of the display, and damage the image visibility of the display, achieving excellent The effect of scratch resistance

Active Publication Date: 2019-05-03
NISSAN CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that fingerprints adhere to the surface of the touch panel every time an operation is performed, significantly impairing the visibility of images on the display, or impairing the appearance of the display.
However, since perfluoropolyether has a high fluorine concentration, it is generally difficult to dissolve in an organic solvent used in a coating liquid for forming a hard coat layer.

Method used

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  • High-hardness hard coat laminate
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  • High-hardness hard coat laminate

Examples

Experimental program
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Effect test

Embodiment

[0189] Hereinafter, although an Example is given and this invention is demonstrated more concretely, this invention is not limited to the following Example.

[0190] In addition, in the examples, the apparatus and conditions used for preparation of samples and analysis of physical properties are as follows.

[0191] (1) Bar coating

[0192] Device: PM-9050MC manufactured by Esuemte Corporation

[0193] Coating speed: 4m / min

[0194] Bar 1 (bar 1): A-Bar OSP-25 manufactured by Oesus Ji-System Prodakutsu Co., Ltd., with a maximum wet film thickness of 25 μm (equivalent to wire bar #10)

[0195] Bar 2 (bar 2): A-Bar OSP-30 manufactured by Oesus Ji-System Prodakutsu Co., Ltd., with a maximum wet film thickness of 30 μm (equivalent to wire bar #12)

[0196] Bar 3 (bar3): A-Bar OSP-52 manufactured by Oesus Ji-System Prodakutsu Co., Ltd., with a maximum wet film thickness of 52 μm (equivalent to wire bar #20)

[0197] Bar 4 (bar 4): A-Bar OSP-100 manufactured by Oesus Ji-System P...

manufacture example 1

[0256] [Production Example 1] Production of perfluoropolyether SM1 having acryloyl groups at both ends via poly(oxyalkylene) and one urethane bond

[0257]1.05 g (0.5 mmol) of PFPE1, 0.26 g (1.0 mmol) of BEI, 10 mg (0.016 mmol) of DBTDL, and 1.30 g of MEK were added to a threaded tube. The mixture was stirred at room temperature (approximately 23° C.) for 24 hours using a stirrer bar. This reaction mixture was diluted with 3.93 g of MEK to obtain a 20% by mass MEK solution of SM1, which is the target compound.

[0258] The obtained SM1 had a polystyrene-equivalent weight-average molecular weight Mw of 3,400 by GPC, and a degree of dispersion: Mw (weight-average molecular weight) / Mn (number-average molecular weight) of 1.2.

manufacture example 2

[0259] [Production example 2] Production of highly branched polymer LA2 having long-chain alkyl groups

[0260] Add 54g of MIBK into a 200mL reaction flask, inject nitrogen gas for 5 minutes while stirring, and heat (approximately temperature 116° C.) until the inner liquid refluxes.

[0261] In another 100mL reaction flask, add 6.7g (30mmol) of HDDA, 3.6g (15mmol) of LA, 18.6g (45mmol) of 4ELA, 6.0g (24mmol) of ADVN, and 54g of MIBK, and inject 5 Nitrogen was replaced with nitrogen for 1 minute, and cooled in an ice bath until 0 °C.

[0262] Into the refluxing MIBK in the above-mentioned 200 mL reaction flask, the contents were added dropwise over 30 minutes from the above-mentioned 100 mL reaction flask charged with HDDA, LA, 4ELA, and ADVN using a dropping pump. After the dropwise addition was completed, stirring was further carried out for 1 hour.

[0263] The reaction mixture was cooled to room temperature (approximately 23° C.), and 143.0 g of the target hyperbranched ...

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Abstract

To provide a laminate provided with a hard coat layer that has high scratch resistance and hardness. A high-hardness hard coat laminate that comprises a substrate, a primer layer above the substrate,and a hard coat layer above the primer layer. The primer layer comprises a cured product of a primer layer-forming composition containing (A) a polyfunctional compound selected from the group consisting of active energy ray-curable polyfunctional monomers and polymers, (B) inorganic fine particles, and (C) a polymerization initiator that generates radicals by means of active energy rays. The hardcoat layer comprises a cured product of a curable composition containing (a) an active energy ray-curable polyfunctional monomer, (b) a perfluoropolyether in which an active energy ray-polymerizable group is bonded to both ends thereof via a poly(oxyalkylene) group or via a poly(oxyalkylene) group and one urethane bonding group in this order, and (c) a polymerization initiator that generates radicals by means of active energy rays. Also provided is a method for producing the high-hardness hard coat laminate.

Description

technical field [0001] The present invention relates to a high-hardness hard-coat laminate including a hard-coat layer excellent in scratch resistance and a method for producing the same. Background technique [0002] Products in which touch panels are mounted on flat panel displays such as personal computers, mobile phones, portable game devices, and ATMs are commercialized in great numbers. In particular, with the launch of smartphones and tablet PCs, the number of capacitive touch panels with multi-touch functions has increased rapidly. [0003] Thin tempered glass is used on the surface of these touch panel displays, and a protective film is attached to the display surface in order to prevent the glass from flying. Since a plastic film is used for the protective film, it is more easily damaged than glass, and it is necessary to provide a hard coat layer excellent in scratch resistance on the surface. In order to impart scratch resistance to the surface of a plastic fil...

Claims

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Application Information

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IPC IPC(8): B32B27/16B32B27/20B32B27/30C09D4/00
CPCB32B27/16B32B27/20B32B27/30C09D4/00B32B27/08B32B27/285B32B7/022B32B2255/26B32B2255/10B32B2307/536
Inventor 松山元信辻本晴希
Owner NISSAN CHEM IND LTD