TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The active energy ray-curable compound (C) comprises ultraviolet-curable compound (C1) of formula (I) having methylene group (-(CH2)5-) derived from caprolactone and (meth)acryloyl group. The active energy-ray-curable compound (C2) is urethane-compound having 2-15 (meth)acryloyl groups.R1=H or methyl;andn+m+l+o+p+q=1-12, preferably 6-12.    TECHNOLOGY FOCUS - POLYMERS - Preferred Process: The active energy ray-curable compound (A) is reaction product of acrylic-type prepolymer having hydroxyl group obtained by copolymerizing acrylic-type monomer (m1) having benzotriazole group and (meth)acryloyl group, acrylic-type monomer (m2) having benzotriazole group and/or functional group containing at least one of fluorine atom and silicon atom, acrylic-type monomer (m3) having hydroxyl group and (meth)acryloyl group and acrylic-type monomer (m4) having (meth)acryloyl group, and acrylic-type monomer (m5) having (meth)acryloyl group and isocyanate group. Preferred Composition: The silicon atom-containing functional group is polysiloxane group. The fluorine atom-containing functional group is perfluoroalkyl group. The active energy ray-curable compound (A) contains (in wt.%) acrylic-type monomer (m1) (10-80), acrylic-type monomer (m2) (0.1-20), acrylic-type monomer (m3) (10-80) and acrylic-type monomer (m4) (0-10). The active energy ray-curable composition further contains active energy-ray-curable compound (C2) which does not have methylene group (-(CH2)5-) derived from caprolactone, and silica as inorganic oxide. The active energy ray-curable composition contains (in wt.%) active energy ray-curable compound (A) (1-50), active energy ray-curable compound (B) (1-20) and active energy ray-curable compound (C) (35-95), or active energy ray-curable compound (A) (5-50), active energy ray-curable compound (B) (0.5-15), ultraviolet-curable compound (C1) (5-60) and ultraviolet-curable compound (C2) (20-80). The content of inorganic oxide is 0.1-20 parts weight with respect to 100 parts weight of active energy ray-curable compound (A), active energy ray-curable compound (B) and active energy ray-curable compound (C). Preferred Properties: The active energy ray-curable compound (A) has number average molecular weight of 3000-100000, and (meth)acryloyl group equivalent of 250-1600. The active energy ray-curable composition has number average molecular weight of 500-10000.