Photocurable resin composition, cured product of same and method for producing cured product

Patent metadata

Field	Value
Publication number	US-10246538-B2
Application number	US-201515523736-A
Country	US
Kind code	B2
Filing date	Sep 2, 2015
Priority date	Nov 4, 2014
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

The object of the present invention is to provide a photocurable resin composition which allows obtainment of a cured product that has high concealability, while being suppressed in fading due to ultraviolet light, a cured product of the photocurable resin composition, and a method for producing a cured product.
The present invention relates to a photocurable resin composition containing the following component (A) to component (D):
component (A): leuco dye; component (B): photoacid generating agent; component (C): radical polymerizable compound; and component (D): α-hydroxy acetophenone-based radical initiator which has a 5% weight loss temperature (thermal decomposition temperature) in a nitrogen atmosphere of 200° C., or higher as determined by a TGA method at a temperature increase rate, of 10° C./minute.

First claim

The invention claimed is:

1. A photocurable resin composition comprising the following component (A) to component (D):
component (A): a leuco dye;
component (B): a photoacid generating agent;
component (C): a radical polymerizable compound; and
component (D): an α-hydroxy acetophenone-based radical initiator having thermal decomposition temperature of 200° C. or higher.

2. The photocurable resin composition according to claim 1 , wherein the component (D) is comprised at 0.01 to 15 parts by mass relative to 100 parts by mass of the component (C).

3. The photocurable resin composition according to claim 1 , wherein the component (D) is 1-[4-(2-hydroxyethoxy)-phenyl]-2-hydroxy-2-methyl-1-propan-1-one or 2-hydroxy-1-{4-[4-(2-hydroxy-2-methyl-propionyl)-benzyl]phenyl}-2-methyl-propan-1-one.

4. The photocurable resin composition according to claim 1 , wherein the component (C) comprises a (meth)acryloyl group-containing oligomer and a (meth)acryloyl group-containing monomer.

5. The photocurable resin composition according to claim 1 , wherein a cured product has a black color.

6. The photocurable resin composition according to claim 1 , wherein the composition is used for a covering material, a resin for casting, a sealing agent, a potting agent, an adhesive, or a coating material.

7. A cured product of the photocurable resin composition according to claim 1 .

8. A method for producing the cured product according to claim 7 comprising a curing step for curing the photocurable resin composition by light irradiation.

9. The photocurable resin composition according to claim 1 , wherein the component (D) comprises at least one selected from the group consisting of 1-[4-(2-hydroxyethoxy)-phenyl]-2-hydroxy-2-methyl-1-propan-1-one, 2-hydroxy-1-{4-[4-(2-hydroxy-2-methyl-propionyl)-benzyl]phenyl}-2-methyl-propan-1-one, and 2-hydroxy-2-methyl-1-[4-(1-methylvinyl)phenyl]propanone oligomer.

Assignees

• Three Bond Co Ltd

Inventors

• Takeo Yuko
• Otsuki Naoya

Classifications

• C08F2/50

  with sensitising agents · CPC title

• C08K5/18

  with aromatically bound amino groups · CPC title

• C08F2/44 Primary

  Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers · CPC title

• C08F290/067

  Polyurethanes; Polyureas · CPC title

• C08F2/48

  by ultraviolet or visible light · CPC title