Photocurable material combining radical curability and anionic curability

Patent metadata

Field	Value
Publication number	US-9695270-B2
Application number	US-201314767703-A
Country	US
Kind code	B2
Filing date	Aug 9, 2013
Priority date	Feb 27, 2013
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

A photocurable material that allows dark portion curing even if the form of a material to be cured is complicated and the length of an unirradiated portion is long. The photocurable material has both of radical curability and anionic curability, is a photocurable liquid composition curable by irradiation of light, and contains (meth)acrylate and a chain transfer agent, wherein the chain transfer agent is a compound containing one or more of at least one kind selected from a urethane bond, a urea bond, and an isocyanate group, and one or more alkoxysilyl groups. The photocurable material is capable of curing even a portion that irradiation light does not reach.

First claim

The invention claimed is:

1. A photocurable material that comprises a photocurable liquid composition curable by irradiation of light, the material comprising:
(meth)acrylate; and
a chain transfer agent;

wherein the chain transfer agent is represented by the following chemical formula:

R represents an alkyl group; X represents a divalent hydrocarbon group; Y represents a linear divalent hydrocarbon group, a saturated cyclic divalent hydrocarbon group, or an unsaturated cyclic divalent hydrocarbon group; Z represents a repeating unit of a dial component; n is 5 to 100; and m is 2 to 100.

2. The photocurable material according to claim 1 , further comprising a metal-containing compound.

3. The photocurable material according to claim 2 , wherein the content of the chain transfer agent is within the range of 10 to 90 mass % of the total photocurable material.

4. The photocurable material according to claim 3 , wherein the metal-containing compound comprises any one metal compound selected from the group consisting of tin, copper, zinc, cobalt, and nickel.

5. The photocurable material according to claim 2 , wherein the metal-containing compound comprises any one metal compound selected from the group consisting of tin, copper, zinc, cobalt, and nickel.

6. The photocurable material according to claim 1 , wherein the content of the chain transfer agent is within the range of 10 to 90 mass % of the total photocurable material.

7. The photocurable material according to claim 2 , wherein the metal-containing compound comprises any one metal compound selected from the group consisting of copper, zinc, cobalt, and nickel.

8. A method for curing the photocurable material according to claim 1 , which method is carried out by anion curing in which a polyalcohol having a hydroxyl group is generated as a by-product in a radical curing reaction, and an ester exchange reaction occurs between the alkoxysilyl groups of the chain transfer agent and the polyalcohol before the alkoxysilyl groups react with moisture in air.

Assignees

• Autonetworks Technologies Ltd
• Sumitomo Wiring Systems
• Sumitomo Electric Industries
• Univ Kyushu
• Autonetworks Technologies Ltd

Inventors

• Hase Tatsuya
• Nakashima Kazuo
• Mizoguchi Makoto

Classifications

• C08F2/50

  with sensitising agents · CPC title

• C08G18/837

  by silicon containing compounds · CPC title

• C08F2/38 Primary

  Polymerisation using regulators, e.g. chain terminating agents {, e.g. telomerisation} · CPC title

• C08G18/831 Primary

  by oxygen-containing compounds inclusive of carbonic acid halogenides, carboxylic acid halogenides and epoxy halides (by aldehydes C08G18/84, by peroxides C08G18/86) · CPC title