ACTIVE ENERGY RAY CURABLE RESIN COMPOSITION AND ARTICLE HAVING FINE CONCAVE-CONVEX STRUCTURE ON SURFACE
The present invention relates to an active energy ray-curable resin composition including: a polymerizable component in which the polymerizable component includes 50 to 80% by mass of a monomer having 3 or more radical-polymerizable functional groups, and a molecular weight per functional group is 110 to 200, 10 to 50% by mass of a monomer having 2 radical-polymerizable functional groups, and at least 11 oxyalkylene groups, and 0 to 20% by mass of a monomer having one radical-polymerizable functional group; and a photopolymerization initiator. The present invention can provide an active energy ray-curable resin composition which can have comparatively low viscosity and can form a cured product with an excellent stamper mold releasing property, high abrasion resistance and an excellent fingerprint-wiping property, and an article having a fine concave-convex structure on the surface having high abrasion resistance and an excellent fingerprint-wiping property.
1 . An active energy ray-curable resin composition comprising:
a polymerizable component (X); and
a photopolymerization initiator (D),
(Polymerizable Component (X))
wherein the polymerizable component (X) comprises 50 to 80% by mass of a monomer (A) having 3 or more radical-polymerizable functional groups within a molecule and a molecular weight per functional group is 110 to 200,
10 to 50% by mass of a monomer (B) having 2 radical-polymerizable functional groups within a molecule and 11 or more oxyalkylene groups within a molecule, and,
0 to 20% by mass of a monomer (C) having one radical-polymerizable functional group within a molecule.
2 . The active energy ray-curable resin composition according to claim 1 ,
wherein the monomer (A) has 3 to 15 radical-polymerizable functional groups within the molecule.
3 . The active energy ray-curable resin composition according to claim 1 ,
wherein the monomer (A) is a monomer having a structure derived from at least one compound selected from the group consisting of trimethylolpropane, trimethylolethane, pentaerythritol, glycerol, hexamethylene diisocyanate and isophorone diisocyanate.
4 . The active energy ray-curable resin composition according to claim 1 ,
wherein the monomer (A) is at least one monomer selected from the group consisting of trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, ethoxylated pentaerythritol tetraacrylate, tetrafunctional urethane-based hard acrylate, hexafunctional urethane-based hard acrylate, a reaction mixture of trimethylolethane/acrylic acid/succinic acid=2/4/1, di- to nonafunctional urethane acrylate and ethoxylated dipentaerythritol hexaacrylate.
5 . The active energy ray-curable resin composition according to claim 1 ,
wherein the monomer (B) is a monomer having 11 to 30 oxyalkylene groups within the molecule.
6 . The active energy ray-curable resin composition according to claim 1 ,
wherein the monomer (B) is at least one monomer selected from the group consisting of polyethylene glycol diacrylate and ethoxylated bisphenol A diacrylate.
7 . The active energy ray-curable resin composition according to claim 1 ,
wherein the monomer (C) is at least one monomer selected from the group consisting of acryloyl morpholine, hydroxyethyl acrylate, N,N-dimethyl acrylamide,
N-vinyl pyrrolidone, N-vinyl formamide, methyl acrylate and ethyl acrylate.
8 . The active energy ray-curable resin composition according to claim 1 ,
wherein the monomer (C) is at least one monomer selected from the group consisting of 2-hydroxyethyl acrylate, acryloyl morpholine, and methyl acrylate.
9 . The active energy ray-curable resin composition according to claim 1 ,
wherein the ratio of the photopolymerization initiator (D) is 0.01 to 10 parts by mass with regard to 100 parts by mass of the polymerizable component (X).
10 . The active energy ray-curable resin composition according to claim 1 ,
wherein the photopolymerization initiator (D) is 2-hydroxy-2-methyl-1-phenylpropan-1-one or 2,4,6-trimethyl benzoyl diphenylphosphine oxide.
11 . An article having a fine concave-convex structure on a surface,
wherein the fine concave-convex structure is formed by contacting the active energy ray-curable resin composition according to claim 1 with a stamper mold having a reversed structure of the fine concave-convex structure on the surface and curing the active energy ray-curable resin composition.
12 . The article having the fine concave-convex structure on the surface according to claim 11 , which is an anti-reflective product.