(Meth)acrylate composition

Patent metadata

Field	Value
Publication number	US-9353204-B2
Application number	US-201314429598-A
Country	US
Kind code	B2
Filing date	Aug 9, 2013
Priority date	Oct 2, 2012
Publication date	May 31, 2016
Grant date	May 31, 2016

Abstract

Presented is a (meth)acrylate composition that can be cured even in an unirradiated portion that is not reached by light. The (meth)acrylate composition contains a compound having one or more vinyl groups in a molecular structure thereof. The compound has a ratio of a molecular weight thereof to a number of the vinyl groups of 300 or lower. The composition generates a heat of reaction during photopolymerization thereof, and the heat of reaction causes thermal polymerization of the composition.

First claim

The invention claimed is:

1. A method for curing a (meth)acrylate composition, the composition comprising a first compound having one or more vinyl groups in a molecular structure thereof, the compound having a ratio of a molecular weight thereof to a number of the vinyl groups of 300 or lower, the composition not comprising a thermal polymerization initiator or a chain transfer agent, the method comprising a step of curing the composition without agitating the composition, wherein a portion of the composition that is not irradiated with light reaches a temperature from 151 to 175° C. as a result of photopolymerization of the composition and is cured by thermal polymerization caused by a heat of reaction generated during said photopolymerization.

2. The method according to claim 1 , wherein the composition further comprises one or more vinyl group-containing compounds other than the first compound, including a second compound having one or more vinyl groups in a molecular structure thereof, the second compound having a ratio of a molecular weight thereof to a number of the vinyl groups higher than 300, and a content of the first compound with respect to a total content of all vinyl group-containing compounds in the composition is 30 mass % or higher.

3. The method according to claim 2 , wherein the composition further comprises 0.1 to 20 mass % of a photopolymerization initiator with respect to a total mass of the composition.

Assignees

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

Inventors

• Hase Tatsuya
• Nakashima Kazuo
• Mizoguchi Makoto

Classifications

• C08G18/672

  Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen · CPC title

• C08L33/00

  Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers · CPC title

• C08F8/30

  Introducing nitrogen atoms or nitrogen-containing groups · CPC title

• C08F120/14

  Methyl esters {, e.g. methyl (meth)acrylate} · CPC title

• C08L71/02

  Polyalkylene oxides · CPC title