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Ultra-violet solidified resin composition, coating shaping method

A curable resin and ultraviolet technology, applied in the direction of coatings, devices for coating liquids on the surface, etc., can solve the problems of difficult coating formation and labor-intensive work, and achieve accelerated curing, accelerated curing reaction, and difficult to cure unevenly Effect

Inactive Publication Date: 2004-09-22
YAMAHA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, since the reaction speed is very fast in the system of the polymerization initiator or polymerization accelerator of such a metal compound and the ultraviolet curable resin, it is necessary to make a two-component mixed type system, and sometimes it is necessary to form a coating layer. need to spend effort
Furthermore, since the curing reaction is carried out by ultraviolet irradiation, there is also a problem that the formation of the so-called coating layer is difficult in places where ultraviolet rays are difficult to reach.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 0.3% by weight of percarbonate with a 1-hour half-life temperature of 60°C to a solution in which unsaturated polyester for undercoating containing a photoinitiator as an ultraviolet curable resin is dissolved in a reactive diluent such as styrene A curing agent (trade name: Perkadox 16, manufactured by Kayaku Akuzo Co., Ltd.) was prepared as a UV coating 1 as an organic peroxide curing agent. Wipe and apply this UV coating 1 on the mahogany board, and carry out UV irradiation to this (about 800mJ / cm of light quantity) 2 ) to get the undercoat. At this time, the surface temperature of the mahogany board rose to 57° C. by UV irradiation. After UV irradiation, even if it is ground on P180 paper, there will be no resin bleeding, etc., and there will be no problems such as uneven curing or coloring.

Embodiment 2

[0030] After performing the primer in the same manner as in Example 1, 1.0% by weight of A percarbonate-based curing agent (trade name: Perkadox 16, manufactured by Kayaku Akuzo Co., Ltd.) having a half-life temperature of 60° C. for 1 hour was used as an organic peroxide-based curing agent, and UV coating 2 was prepared. Spray coating this UV coating 2 on mahogany board, and carry out UV irradiation to this (about 800mJ / cm of light quantity) 2 ), and the middle coating is obtained. At this time, the surface temperature of the mahogany board rose to 62° C. by UV irradiation. In addition, the film thickness after curing was about 400 μm. For the intermediate coating layer of Example 2, the color change ΔE before and after coating and the film hardness after curing (horn hardness) were measured. In addition, the color change ΔE is the difference when the brightness and chromaticity values ​​before and after painting are measured using a Microflash spectrocolorimeter (manufact...

Embodiment 3

[0032] After performing the primer in the same manner as in Example 1, 1.0% by weight of A peroxyketal curing agent (trade name: Torigonox DT-50, manufactured by Kayaku Akuzo Co., Ltd.) with a half-life of 1 hour and a temperature of 121° C. was prepared as the UV coating 3 as an organic peroxide curing agent. By spraying this UV coating 3 on the mahogany board identically with embodiment 2, and carry out UV irradiation to this (about 800mJ / cm of light amount) 2), and the middle coating is obtained. For the intermediate coat layer of Example 3, the color change ΔE before and after coating and the film hardness after curing (horn hardness) were measured. In addition, the color change ΔE is the difference when the brightness and chromaticity values ​​before and after painting are measured with a Microflash spectrocolorimeter (manufactured by Datacolor). The results are shown in Table 1.

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PUM

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Abstract

To provide an ultraviolet ray-curable resin composition for forming a coating film, wherein the curing reaction is promoted even in difficult places to be irradiated by ultraviolet ray, the obtained coating film is hard to cause discoloring, and it is easy to handle during the application, and to provide a method of forming a coating film using the same.The ultraviolet ray-curable resin composition includes an ultraviolet ray-curable resin and an organic peroxide-based curing agent, wherein the organic peroxide-based curing agent is included as a component which promotes the curing reaction of the ultraviolet ray-curable resin by causing a decomposition reaction of itself through generation of heat accompanied by irradiation of ultraviolet ray.(C)2005,JPO&NCIPI.

Description

technical field [0001] The present invention relates to an ultraviolet curable resin composition and a method for forming a coating, in particular to a method for forming a stable coating on a portion where light is difficult to reach. Background technique [0002] Currently, a method of forming a resin coating cured by light irradiation is known. As a resin cured by light irradiation, for example, a photocurable resin cured by visible light irradiation is known, but in this case, there is a problem that the price of a photopolymerization initiator for visible light is very high; Reaction, the preservation of the resin composition before coating requires shading; it is difficult to cure in parts that are difficult to reach, such as deep parts of wood vessels with complex shapes, etc. [0003] Therefore, for example, Patent Document 1 discloses a technique of forming a coating layer using an ultraviolet curable resin that reacts by ultraviolet irradiation instead of a visibl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00B05D7/06C08F283/01C08K5/14C09D5/00C09D7/12C09D201/00
Inventor 铃木敏大隅久芳
Owner YAMAHA CORP
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