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Resin composition

A technology of resin composition and compound, applied in the direction of coating, polyurea/polyurethane coating, etc., can solve the problems of no hard coating record, no consideration of shrinkage rate, no requirement of hardness and scratch resistance, etc., to achieve shrinkage The effect of low rate and high hardness

Inactive Publication Date: 2010-10-13
NIPPON KAYAKU CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent Document 4 describes a resin that contains a polymer having a weight average molecular weight of 10,000 or more and triacryloyloxyethyl isocyanurate as essential components, and is used as a coating film for a protective mask such as a solder resist film for printed wiring. Compositions, however, are not required for hardness and mar resistance, nor for shrinkage
In Patent Document 5, a three-dimensional modeling composition containing modified silica fine particles is described, but there is no description about a hard coat layer

Method used

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Embodiment

[0060] Hereinafter, the present invention will be described in more detail through examples, but the present invention is not limited to these examples. In addition, in an Example, unless otherwise specified, "part" means "part by mass".

Synthetic example 1

[0062] Add 344.35 g (1.54 moles) of glycerol monoacrylate monomethacrylate, 0.25 g of 4-methoxyphenol as a polymerization inhibitor, and 0.25 g of 4-methoxyphenol as an amino 0.25 g of dibutyltin dilaurate as a formate reaction catalyst was stirred uniformly so that the internal temperature was 50°C. Then, 155.65 g (0.70 mol) of isophorone diisocyanate was added dropwise so that the internal temperature did not exceed 80°C, and after the addition, it was reacted at 80°C, and the time when the NCO content became 0.1% or less was regarded as the end point of the reaction to obtain a carbamate Acrylate.

Synthetic example 2

[0064] Add 262.60 g (1.17 moles) of glycerol monoacrylate monomethacrylate, 125.00 g of methyl ethyl ketone, and 0.25 g of 4-methoxyphenol as a polymerization inhibitor in a reactor equipped with a reflux condenser, a stirrer, a thermometer and a temperature regulating device. g. Stir 0.25 g of dibutyltin dilaurate as a urethanization reaction catalyst to make the internal temperature 50°C. Then, 237.40 g (0.36 mol) of T-1890 (isophorone diisocyanate trimer) was added dropwise so that the internal temperature did not exceed 80°C, and after the addition, it was reacted at 80°C, and the time when the NCO content reached 0.1% or less was regarded as At the end of the reaction, a resin solution containing 80% of urethane acrylate was obtained.

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Abstract

The present invention provides a resin composition which has low shrinkage ratio in solidifying and can obtain cured film with high hardness and no easy generation of crimp or crack, and a protecting coating using the resin composition. The resin composition comprises carbamate(methyl)acrylate obtained through the reaction between glycerin(methyl)acrylate (a) and alicyclic polyisocyanate compound, or carbamate(methyl)acrylate obtained through the reaction between glycerin(methyl)acrylate (a) and (methyl)acrylate (a-1) except for (a) and polyisocyanate compound (b), (methyl)acrylate and photopolymerization initiator.

Description

technical field [0001] This invention relates to the resin composition containing the urethane (meth)acrylate which uses glycerin (meth)acrylate as a raw material. In addition, the cured film of the resin composition of the present invention has excellent hardness, adhesion to the substrate, scratch resistance, etc., less curling, and less cracking, so it can be used as a plastic film or a small housing. Protective paint. Background technique [0002] Currently, plastics excellent in processability and transparency, lightweight, inexpensive, and optical properties are used in the industry. However, since plastic is softer than glass and the like, and has disadvantages such as easy scratches on the surface, a protective paint is generally applied to the surface. Among protective paints, various thermosetting paints such as polysiloxane-based paints, acrylic paints, and melamine-based paints are known as protective paints for increasing surface hardness. Among them, polysil...

Claims

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Application Information

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IPC IPC(8): C08F220/36C08F220/10C09D4/02
CPCC08F290/06C08L51/08C08L75/14C09D151/08C09D175/14
Inventor 小木聪栗桥透小渊香津美
Owner NIPPON KAYAKU CO LTD
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