Patent ID: 7785713

Claim:
An active energy ray-curable coating composition comprising: (A) 10 to 70% by mass of a poly(meth)acrylate of a mono- or polypentaerythritol represented by the following formula (1), wherein, in formula (1), at least three α's among a plurality of α's respectively represent a (meth)acryloyloxy group (CH 2 ═CR—COO—) or a caprolactone-modified (meth)acryloyloxy group {CH 2 ═CR—CO(O(CH 2 ) 5 C ═O) y —O—}, wherein R represents a hydrogen atom or a methyl group and y represents an integer of 1 or more, and the remaining α's respectively represent a hydroxyl group, and n represents an integer of 0 to 4; (B) 5 to 50% by mass of (B-1) a polyester aliphatic urethanedi(meth)acrylate compound which is obtained by reacting an aliphatic isocyanate compound having two isocyanate groups in a molecule, a caprolactone-modified polyester diol, and an acrylate having a hydroxyl group, (B-2) a urethanepoly(meth)acrylate compound represented by the following formula (2), or (B-3) a polyether urethanedi(meth)acrylate compound having two (meth)acryloyloxy groups in a molecule, wherein, in the case that component (B) is component (B-3), at least one α among a plurality of α's in component (A) is a caprolactone-modified (meth)acryloyloxy group, wherein, in formula (2), 1, m and n respectively represent an integer of 0 or more and the sum of 1, m and n is one or more, and R represents a hydrogen atom or a methyl group; (C) 5 to 70% by mass of a poly[(meth)acryloyloxyalkyl](iso)cyanurate represented by the following formula (3) or (4), wherein, in formulae (3) and (4), X 1 ,X 2 and X 3 respectively represent a (meth)acryloyl group (CH 2 ═CR—CO—), a caprolactone-modified (meth)acryloyl group {CH 2 ═CR—CO(O(CH 2) 5 C═O) z —},wherein R represents a hydrogen atom or a methyl group and z represents an integer of 1 or more, a hydrogen atom, or an alkyl group, and at least two of X 1 , X 2 and X 3 respectively represent the (meth)acryloyl group or the caprolactone-modified (meth)acryloyl group, and R 1 , R 2 and R 3 respectively represent an oxyalkylene group or a polyoxyalkylene group; and (D) 0.1 to 10% by mass of a photopolymerization initiator.