Sheet-shaped photocurable composition, photocurable composition solution, method for producing sheet-shaped photocurable composition, and laminated body
AssigneeThreebond Co., Ltd.
InventorsKazuyuki Ueno, Takashi Nemoto
Life of this patent
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Abstract
The sheet-shaped photocurable composition of the present invention includes components (A) to (D) as follows, and is in a sheet shape at 25° C. in a state before curing: Component (A): (meth)acrylic triblock copolymer, Component (B): (meth)acrylate oligomer (excluding the component (A)), Component (C): a monomer having a (meth)acryloyl group and having a specific structure, and Component (D): photoinitiator.
Claims5
A sheet-shaped photocurable composition comprising components (A) to (D) as follows and being in a sheet shape at 25° C. in a state before curing:
- Component (A):
- (meth)acrylic triblock copolymer,
- Component (B):
- (meth)acrylate oligomer (excluding the component (A)),
- Component (C):
- at least one compound selected from the group consisting of hydroxyethyl (meth) acrylamide and N-n-butoxymethyl (meth) acrylamide, and
- Component (D):
- photoinitiator,
- wherein a content of the component (B) is 42.9 to 66.7 parts by mass relative to 100 parts by mass of the component (A),
- a content of the component (C) is 4.3 to 7.1 parts by mass relative to 100 parts by mass of the component (A),
- the component (A) is an elastomer including no reactive functional group and is a triblock copolymer of (meth)acrylate of an X—Y—X type composed of a segment X and a segment Y, in which the segment X is a polymethyl methacrylate block and the segment Y is a poly-n-butyl acrylate block, and
- the component (B) is an aliphatic urethane-modified diacrylate oligomer which has a weight average molecular weight of 4,000 to 30,000.
A laminated body, comprising a configuration in which a first adherend, a sheet-shaped photocurable composition, and a second adherend are bonded in this order, wherein
- the sheet-shaped photocurable composition is formed by volatilizing a solvent included in a photocurable composition solution on the first adherend and/or the second adherend,
- the photocurable composition solution comprises components (A) to (D) as follows and the solvent:
- Component (A):
- (meth) acrylic triblock copolymer,
- Component (B):
- (meth)acrylate oligomer (excluding the component (A)),
- Component (C):
- at least one compound selected from the group consisting of hydroxyethyl (meth) acrylamide and N-n-butoxymethyl (meth) acrylamide, and
- Component (D):
- photoinitiator,
- a content of the component (B) is 42.9 to 66.7 parts by mass relative to 100 parts by mass of the component (A),
- a content of the component (C) is 4.3 to 7.1 parts by mass relative to 100 parts by mass of the component (A),
- the component (A) is an elastomer including no reactive functional group, and is a triblock copolymer of (meth)acrylate of an X—Y—X type composed of a segment X and a segment Y, in which the segment X is a polymethyl methacrylate block and the segment Y is a poly-n-butyl acrylate block, and
- the component (B) is an aliphatic urethane-modified diacrylate oligomer which has a weight average molecular weight of 4,000 to 30,000.
Dependencies are inferred from the claim text.