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Cured composition, cured product thereof, hard primer and hard coating

A curable composition and compound technology, applied in coatings, antifouling/underwater coatings, biocide-containing paints, etc., can solve problems such as curling, large curing shrinkage, and large shrinkage, and achieve Excellent scratch resistance, low cure shrinkage, and excellent transparency

Inactive Publication Date: 2015-03-18
SHOWA DENKO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Conventionally, as the main material of the composition for forming such a hard coat film, organic substances such as polyfunctional acrylates have been used, but since the curing shrinkage rate of the coating film is large, hard coats are provided on plastic sheets and plastic films. In the case of a film, curling (curl phenomenon) tends to occur at the end of a plastic sheet or plastic film. In addition, when a hard coat film is provided on the surface of a substrate, cracks are likely to occur on the hard coat film on the substrate, etc. such problem
[0004] In addition, since the deterioration, deformation, and shrinkage due to humidity and heat are large, there is a problem that it is not suitable for applications that require precise coating properties, or applications that require environmental resistance such as light resistance and heat and humidity resistance.

Method used

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  • Cured composition, cured product thereof, hard primer and hard coating
  • Cured composition, cured product thereof, hard primer and hard coating
  • Cured composition, cured product thereof, hard primer and hard coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0159] Examples and comparative examples are shown below to explain the present invention in more detail.

[0160](1) Synthesis of silane coupling agent (inorganic oxide particle modifier) ​​having at least 2 acryloyl groups

Synthetic example 1

[0161] [Synthesis Example 1]: Synthesis of Inorganic Oxide Microparticle Modifier (D-1)

[0162] In a detachable flask, 129.2 g of toluene as a reaction solvent, a mixture of dipentaerythritol pentaacrylate and dipentaerythritol tetraacrylate (46.7% by mass of dipentaerythritol pentaacrylate, di A mixture of 23.1% by mass of pentaerythritol tetraacrylate, 27.9% by mass of dipentaerythritol hexaacrylate, and 2.3% by mass of other unknown substances; 100 g of DPPA mixture a) was heated while stirring so that the internal temperature of the detachable flask was 50° C., and prepared into a homogeneous solution.

[0163] Next, 29.2 g of 3-isocyanatopropyltriethoxysilane (trade name KBE-9007; manufactured by Shin-Etsu Chemical Co., Ltd.), which is an isocyanate compound having an alkoxysilyl group, and tetrachloride as a reaction catalyst were charged. 0.58 g of zirconium acetylacetonate (trade name ZC-700: manufactured by Matsumoto Fine Chemical Co., Ltd., 20% by mass non-volatile...

Synthetic example 2

[0165] [Synthesis Example 2]: Synthesis of Inorganic Oxide Microparticle Modifier (D-2)

[0166] A mixture of dipentaerythritol pentaacrylate and dipentaerythritol tetraacrylate, which is a polyfunctional acrylate having a hydroxyl group, was replaced by a mixture of pentaerythritol triacrylate and pentaerythritol diacrylate, which is a polyfunctional acrylate having a hydroxyl group (pentaerythritol triacrylate 59.7% by mass, 9.6% by mass of pentaerythritol diacrylate, 21.8% by mass of pentaerythritol tetraacrylate, and 8.9% by mass of other unknown substances; PETA mixture), using dibutyltin dilaurate as a reaction catalyst, and In the same manner as in Synthesis Example 1 (see Table 1 for the amount of each compound used), 306 g of a toluene solution having a nonvolatile content of 48.4% by mass of the inorganic oxide fine particle modifying agent (D-2) was obtained.

[0167] [Table 1]

[0168] Table 1

[0169]

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PUM

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Abstract

The invention provides a cured composition, a cured product thereof, a hard primer and a hard coating. The cured composition of the hard primer and the hard coating forms pencils with excellent hardness, lubrication and antifouling properties, low cured contraction, and excellent transparency, bending performance and anti-scratching performance. The cured composition contains, in preset ratio, organo-mineral complex (A) which is obtained by treating surface of inorganic oxide particles with a silane coupling agent containing at least two (methyl) acryloyl groups to combine the silane coupling agent with inorganic oxide particles through covalent bonds, poly-functionality (methyl) acrylate monomers (B) containing at least two (methyl) acryloyl groups, a polymerization initiator (C) and an antifouling imparting agent containing fluorochemicals having a perfluorinated polyether structure and carbon-carbon double bond.

Description

technical field [0001] The present invention relates to a curable curable composition and a cured product obtained by curing the curable composition. Moreover, this invention relates to the application of the said curable composition as a hard-coat material, and the hard-coat film formed using the said hard-coat material. Background technique [0002] The surfaces of plastic sheets, plastic films, etc. are relatively soft, lack scratch resistance, and have low pencil hardness. Therefore, the above-mentioned performances can be improved by providing a hard coat film on the surface of these articles to increase the surface hardness. In addition, the same treatment is widely carried out for the purpose of preventing damage to the surface of resin substrates made of polycarbonate, ABS resin (acrylonitrile-butadiene-styrene resin), and the like. [0003] Conventionally, as the main material of the composition for forming such a hard coat film, organic substances such as polyfunc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D7/12C09D5/16B32B33/00
Inventor 服部阳太郎浦川克朗邵松海井上浩文
Owner SHOWA DENKO KK
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