UV-curable hard coating composition and coated article using the same

A UV-curable hard coating composition, comprising:

• (I) a resin component comprising:
• (A) from about 25 to 30 wt % of urethane acrylate oligomer having five to six polymerizable unsaturated groups;
• (B) from about 5 to 12 wt % of acrylate monomer-1 having three to six polymerizable unsaturated groups;
• (C) from about 3 to 7 wt % of acrylate monomer-2 having two polymerizable unsaturated groups;
• and
• (D) from about 1 to 5 wt % of an acryl resin having a glass transition temperature of from about 60 to 110° C.;
• (II) additives comprising:
• (E) from about 1 to 5 wt % of a photoinitiator, (F) from about 1 to 5 wt % of a UV stabilizer, and (G) from about 0.1 to 0.5 wt % of a leveling agent;
• and
• (III) from about 45 to 55 wt % of an organic solvent,
• wherein the (D) acryl resin has a weight average molecular weight in a range of from about 100,000 to 150,000 g/mol, and
• wherein the photoinitiator is a mixture of a short-wavelength initiator and a long-wavelength initiator with a weight ratio of from about 2 to 4:1.