Curable resin composition and reflective sheet

A curable resin and composition technology, applied in the field of reflective sheets, can solve the problems of flexible substrates, etc., and achieve the effects of excellent adhesion, excellent resolution, and excellent heat resistance

Inactive Publication Date: 2011-10-26
TAIYO HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that the cured product cannot be used for flexible substrates due to its brittleness.

Method used

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  • Curable resin composition and reflective sheet
  • Curable resin composition and reflective sheet
  • Curable resin composition and reflective sheet

Examples

Experimental program
Comparison scheme
Effect test

example 2

[0108] In the curable resin composition of the present invention, a resin containing an ethylenically unsaturated group and a carboxyl group in one molecule, a bisacylphosphine oxide-based photopolymerization initiator, a monoacylphosphine oxide-based photopolymerization initiator, and A curable resin composition (hereinafter referred to as "composition 2") of titanium oxide, an organic solvent, a urethane acrylate, an epoxy compound, and an antioxidant is adjusted to a viscosity suitable for the coating method.

[0109] Next, the viscosity-adjusted composition 2 is coated on a flexible substrate by methods such as screen printing, curtain coating, spray coating, or roll coating. Then, the organic solvent contained in the composition 2 applied to the base material is volatilized and dried at a temperature of 70 to 90° C. to form a coating film (hereinafter referred to as “coating film 2 ”).

[0110] Then, the coating film 2 is selectively exposed to active energy rays through ...

Embodiment

[0115] The present invention will be specifically described below by showing examples and comparative examples, but the present invention is not limited to the following examples.

[0116] Synthesis of resin solution 1:

[0117]In a 2-liter detachable flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping funnel, and a nitrogen inlet tube, 900 g of a solvent (diethylene glycol dimethyl ether), and 21.4 g of a polymerization initiator (tert-butyl 2-Ethylhexanoate peroxide, manufactured by NOF Corporation, brand name: Perbutyl O), was heated to 90°C. After heating, 309.9 g of methacrylic acid, 116.4 g of methyl methacrylate, and 109.8 g of lactone-modified 2-hydroxyethyl methacrylate (manufactured by DAICELCHEMICAL INDUSTRIES, LTD., trade name : PLACCEL FM1), and 21.4 g of a polymerization initiator (bis(4-tert-butylcyclohexyl)peroxydicarbonate, manufactured by NOF Corporation, brand name: PEROYL TCP). Further, by aging the mixture for 6 hours, a carboxyl...

Embodiment (1

[0120] Preparation of each curable resin composition (Examples 1-3, Comparative Examples 1-6):

[0121] The mixture in which each component was blended as described in Table 1 was stirred, and further dispersed by a three-roll mill to prepare curable resin compositions (Examples 1-3, Comparative Examples 1-6). In addition, Comparative Example 1 shows a composition in which the compounding amount of titanium oxide is less than the specified compounding amount of the present invention, Comparative Example 2 shows a composition in which the compounding amount of titanium oxide is larger than the specified compounding amount in the present invention, and Comparative Example 3 shows a composition as a light A composition containing only BAPO as a polymerization initiator, Comparative Example 4 shows a composition containing only MAPO as a photopolymerization initiator, and Comparative Example 5 shows a composition containing a photopolymerization initiator other than BAPO and MAPO a...

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Abstract

A curable resin composition is provided which attains excellent resolution even when titanium oxide is contained therein in a large amount, and which gives a high-resolution cured object having a high reflectance. Also provided is a reflective sheet obtained from the composition. The curable resin composition is characterized by comprising a resin containing an ethylenically unsaturated group and a carboxy group in the molecule, a bisacylphosphine oxide photopolymerization initiator, a monoacylphosphine oxide photopolymerization initiator, titanium oxide, and an organic solvent.

Description

technical field [0001] The present invention relates to a curable resin composition and a reflective sheet. [0002] Specifically, there are the following four types. [0003] One is a curable resin composition capable of forming a high-definition pattern even with a high reflectance, and a reflective sheet using the resin composition. [0004] The other is a curable resin composition capable of forming a high-definition pattern even with a high reflectance and obtaining a cured product having excellent adhesion to a difficult-to-adhesive thermoplastic substrate, and the use of the resin composition Reflective sheeting on difficult-to-bond thermoplastic substrates. [0005] The other is a curable resin composition capable of forming a high-definition pattern even with a high reflectance and obtaining a cured product excellent in heat resistance, and a reflective sheet using the resin composition. [0006] Still another is a curable resin composition that can form a high-def...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03F7/029B32B27/00B32B27/30C08F299/00C08K3/22C08L63/00G02B1/04G02B5/08G03F7/004G03F7/038
CPCC08F283/008G02B1/04G03F7/029G03F7/033G03F7/0388G03F7/105C08L33/10C08L63/00B32B27/30C08K3/22
Inventor 能坂麻美角谷武德宇敷滋
Owner TAIYO HLDG CO LTD
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